1901 Pan-American Exposition
- 111 Steamship 1c Green and Black
- 112 Train 2c Carmine and Black
- 113 Automobile 4c Deep Red Brown and Black
- 114 Bridge 5c Ultramarine and Black
- 115 Canal Lock 8c Brown Violet and Black
- 116 Steamship 10c Yellow Brown and Black
1902 Second Bureaus
- 117 Franklin 1c Blue Green
- 118 Washington 2c Carmine
- 119 Washington 2c Carmine (1903)
- 120 Jackson 3c Bright Violet
- 121 Grant 4c Brown
- 122 Lincoln 5c Blue
- 123 Garfield 6c Claret
- 124 Martha Washington 8c Violet Black
- 125 Webster 10c Pale Red Brown
- 126 Harrison 13c Purple Black
- 127 Clay 15c Olive Green
- 128 Jefferson 50c Orange
- 129 Farragut $1 Black
- 130 Madison $2 Dark Blue
- 131 Marshall $5 Dark Green
1904 Louisiana Purchase Exposition
- 132 Livingston 1c Green
- 133 Jefferson 2c Carmine
- 134 Monroe 3c Violet
- 135 McKinley 5c Dark Blue
- 136 Map of Louisiana Purchase 10c Red Brown
1907 Jamestown Exposition
1908-1922 Third Bureaus: Washington-Franklins
- 140 Franklin 1c Green (“ONE”)
- 141 Washington 2c Carmine (“TWO”)
- 142 Washington 1c Green (“1”)
- 142 Washington 1c Green
- 143 Washington 2c Rose Red (“2”)
- 143 Washington 2c Rose
- 143 Washington 2c Carmine
- 144 Washington 3c Light Violet
- 145 Washington 4c Brown
- 146 Washington 5c Blue
- 146 Washington 5c Blue
- 147 Washington 6c Red Orange
- 158 Franklin 10c Orange Yellow
- 159 Franklin 11c Dark Green
- 160 Franklin 12c Claret Brown
- 162 Franklin 15c Gray
- 163 Franklin 20c Light Ultramarine
- 164 Franklin 30c Orange Red
- 165 Franklin 50c Red Violet
1920 Pilgrim Tercentenary
1922-1925 Regular Issue
1923-1925 Regular Issue Vertical Coils
1923-1925 Regular Issue Horizontal Coils
1926-1934 Regular Issue
- Franklin 1c Green
- Washington 2c Carmine
- Lincoln 3c Violet
- Martha Washington 4c Yellow Brown
- Theodore Roosevelt 5c Dark Blue
- Garfield 6c Red Orange
- McKinley 7c Black
- Grant 8c Olive Green
- Jefferson 9c Orange Red
- Monroe 10c Orange
- Hayes 11c Light Blue
- Cleveland 12c Violet Brown
- Harrison 13c Yellow Green
- American Indian 14c Dark Blue
- Wilson 17c Black
- Golden Gate 20c Carmine Rose
- Niagara Falls 25c Blue Green
- Arlington Amphitheater 50c Lilac
- 1928 Valley Forge 2c Carmine Rose
- 1929 Electric Light 2c Flat Plate Carmine Rose
- 1929 Electric Light 2c Rotary Press Carmine Rose
- 1929 Electric Light 2c Carmine Rose Coil Vertical Perf
- 1929 Sullivan Expedition 2c Carmine Rose
1929 Kansas-Nebraska Overprints
- 1929 Fallen Timbers 2c Carmine Rose
- 1929 Ohio River Canalization 2c Carmine Rose
- 1930 Massachusetts Bay Colony 2c Carmine Rose
- 1930 Carolina-Charleston 2c Carmine Rose
- 1930 Harding 1 1/2c Brown
- 1930 Harding 1 1/2c Brown Coil Vertical Perf
- 1930 Taft 4c Brown
- 1930 Von Steuben 2c Carmine Rose
1931-1940
- 1931 Pulaski 2c Carmine Rose
- 1931 Red Cross 2c Black and Red
- 1931 Yorktown 2c Carmine Rose and Black
1932 Washington Bicentennial
- Washington 1/2c Olive Brown
- Washington 1c Green
- Washington 1 1/2c Brown
- Washington 2c Carmine Rose
- Washington 3c Deep Violet
- Washington 4c Light Brown
- Washington 5c Blue
- Washington 6c Red Orange
- Washington 7c Black
- Washington 9c Pale Red
- Washington 10c Orange Yellow
- 1932 Olympic Winter Games 2c Carmine Rose
- 1932 Arbor Day 2c Carmine Rose
- 1932 Olympics 3c Violet
- 1932 Washington 3c Deep Violet
- 1932 Washington 3c Deep Violet Coil Vertical Perf
- 1932 William Penn 3c Violet
- 1933 Georgia Bicentennial 3c Violet
- 1933 Peace of 1783 3c Violet
- 1933 Century of Progress 1c Yellow Green
- 1933 Century of Progress 3c Violet
- 1933 National Recovery Act 3c Violet
- 1933 Kosciuszko 5c Blue
- 1934 Maryland Tercentenary 3c Carmine Rose
- 1934 Mother’s Day 3c Deep Violet Flat Plate Printing
- 1934 Wisconsin Tercentenary 3c Deep Violet
1934-1935 National Parks
- Yosemite 1c Green
- Grand Canyon 2c Red
- Mt. Rainier 3c Deep Violet
- Mesa Verde 4c Brown
- Yellowstone 5c Blue Imperf
- Crater Lake 6c Dark Blue
- Acadia 7c Black
- Zion 8c Sage Green Imperf
- Glacier 9c Red Orange
- Great Smoky Mountains 10c Gray Black
- 1935 Connecticut Tercentenary 3c Violet
- 1935 California Pacific Expo 3c Purple
- 1935 Boulder Dam 3c Purple
- 1935 Michigan Centenary 3c Purple
- 1936 Texas Centenary 3c Purple
- 1936 Rhode Island Tercentenary 3c Purple
- 1936 TIPEX Souvenir Sheet of Connecticut, California Pacific, Michigan, and Texas
- 1936 Arkansas Centennial 3c Purple
- 1936 Oregon Territory 3c Purple
- 1936 Susan B. Anthony 3c Violet
1936-1937 Army Navy Issues
- Army 1c Green
- Army 2c Carmine
- Army 3c Purple
- Army 4c Gray
- Army 5c Ultramarine
- Navy 1c Green
- Navy 2c Carmine
- Navy 3c Purple
- Navy 4c Gray
- Navy 5c Ultramarine
- 1937 Ordinance of 1787 (Northwest Territory) Sesquicentennial 3c Red Violet
- 1937 Virginia Dare 5c Gray Blue
- 1937 Society of Philatelic Americans Souvenir Sheet Great Smoky Mts. 10c Blue Green
- 1937 Constitution Sesquicentennial 3c Bright Red Violet
- 1937 Hawaii 3c Violet
- 1937 Alaska 3c Violet
- 1937 Puerto Rico 3c Bright Violet
- 1937 Virgin Islands 3c Light Violet
1938-1954 Presidential Series (Prexies)
- Benjamin Franklin 1/2c Deep Orange
- George Washington 1c Green
- Martha Washington 1 1/2c Bister Brown
- John Adams 2c Rose Carmine
- Thomas Jefferson 3c Deep Violet
- James Madison 4c Red Violet
- White House 4 1/2c Dark Gray
- James Monroe 5c Bright Blue
- John Quincy Adams 6c Red Orange
- Andrew Jackson 7c Sepia
- Martin Van Buren 8c Olive Green
- William Henry Harrison 9c Rose Pink
- John Tyler 10c Brown Red
- James Knox Polk 11c Ultramarine
- Zachary Taylor 12c Bright Violet
- Millard Fillmore 13c Blue Green
- Franklin Pierce 14c Blue
- James Buchanan 15c Blue Gray
- Andrew Johnson 17c Rose Red
- Ulysses S. Grant 18c Brown Carmine
- Rutherford B. Hayes 19c Bright Violet
- James A. Garfield 20c Bright Blue Green
- Chester A. Arthur 21c Dull Blue
- William McKinley 25c Deep Red Lilac
- Theodore Roosevelt 30c Deep Ultramarine
- William Howard Taft 50c Light Red Violet
- Woodrow Wilson $1 Purple and Black
- 1938 Constitution Ratification 3c Deep Violet
- 1938 Swedish-Finnish Tercentenary 3c Red Violet
- 1938 Northwest Territory Sesquicentennial 3c Bright Violet
- 1938 Iowa Territory Centennial 3c Violet
1939 Presidential Series Vertical Coils
- George Washington 1c Green
- Martha Washington 1 1/2c Bister Brown
- John Adams 2c Rose Carmine
- Thomas Jefferson 3c Deep Violet
- John Quincy Adams 6c Red Orange
1939 Presidential Series Horizontal Coils
- 1939 Golden Gate International Expo 3c Bright Purple
- 1939 New York World’s Fair 3c Deep Purple
- 1939 Washington Inauguration Sesquicentennial 3c Bright Red Violet
- 1939 Baseball Centennial 3c Violet
- 1939 Panama Canal Anniversary 3c Deep Red Violet
- 1939 Colonial Printing Tercentenary 3c Violet
- 1939 Statehood Anniversary 3c Rose Violet
1940 Famous Americans Series
Authors
- Washington Irving 1c Bright Blue Green
- James Fenimore Cooper 2c Rose Carmine
- Ralph Waldo Emerson 3c Bright Red Violet
- Louisa May Alcott 5c Ultramarine
- Samuel Clemens 10c Dark Brown
Poets
- Henry Wadsworth Longfellow 1c Bright Blue Green
- John Greenleaf Whittier 2c Rose Carmine
- James Russell Lowell 3c Bright Red Violet
- Walt Whitman 5c Ultramarine
- James Whitcomb Riley 10c Dark Brown
Educators
- Horace Mann 1c Bright Blue Green
- Mark Hopkins 2c Rose Carmine
- Charles Eliot 3c Bright Red Violet
- Frances Willard 5c Ultramarine
- Booker T. Washington 10c Dark Brown
Scientists
- John James Audubon 1c Bright Blue Green
- Dr. Crawford Long 2c Rose Carmine
- Luther Burbank 3c Bright Red Violet
- Dr. Walter Reed 5c Ultramarine
- Jane Addams 10c Dark Brown
Composers
- Stephen Foster 1c Bright Blue Green
- John Philip Sousa 2c Rose Carmine
- Victor Herbert 3c Bright Red Violet
- Edward MacDowell 5c Ultramarine
- Ethlebert Nevin 10c Dark Brown
Artists
- Gilbert Charles Stuart 1c Bright Blue Green
- James Whistler 2c Rose Carmine
- Augustus Saint-Gaudens 3c Bright Red Violet
- Daniel French 5c Ultramarine
- Frederic Remington 10c Dark Brown
Inventors
- Eli Whitney 1c Bright Blue Green
- Samuel Morse 2c Rose Carmine
- Cyrus McCormick 3c Bright Red Violet
- Elias Howe 5c Ultramarine
- Alexander Graham Bell 10c Dark Brown
- 1940 Pony Express Anniversary 3c Henna Brown
- 1940 Pan American Union Anniversary 3c Light Violet
- 1940 Idaho Statehood Anniversary 3c Bright Violet
- 1940 Wyoming Statehood Anniversary 3c Brown Violet
- 1940 Coronado Expedition Anniversary 3c Violet
- 1940 National Defense 1c Bright Blue Green
- 1940 National Defense 2c Rose Carmine
- 1940 National Defense 3c Bright Violet
- 1940 Thirteenth Amendment Anniversary 3c Deep Violet
1941-1950
- 1941 Vermont Sesquicentennial 3c Light Violet
- 1942 Kentucky Sesquicentennial 3c Violet
- 1942 Win the War 3c Violet
- 1942 Chinese Resistance 5c Bright Blue
- 1943 Allied Nations 2c Rose Carmine
- 1943 Four Freedoms 1c Bright Blue Green
1943 Overrun Countries Flags
- Poland 5c Blue Violet, Bright Red, and Black
- Czechoslovakia 5c Blue Violet, Blue, Bright Red, and Black
- Norway 5c Blue Violet, Dark Rose, Deep Blue, and Black
- Luxembourg 5c Blue Violet, Dark Rose, Light Blue, and Black
- Netherlands 5c Blue Violet, Dark Rose, Blue, and Black
- Belgium 5c Blue Violet, Dark Rose, Yellow, and Black
- France 5c Blue Violet, Deep Blue, Dark Rose, and Black
- Greece 5c Blue Violet, Pale Blue, Greenish Blue, and Black
- Yugoslavia 5c Blue Violet, Blue, Dark Rose, and Black
- Albania 5c Blue Violet, Dark Red, and Black
- Austria 5c Blue Violet, Red, and Black
- Denmark 5c Blue Violet, Red, and Black
- Korea 5c Blue Violet, Red, Light Blue, and Gray
- 1944 Steamship Crosses the Atlantic Anniversary 3c Violet
- 1944 Telegraph Centenary 3c Bright Red Violet
- 1944 Philippines 3c Deep Violet
- 1944 Motion Pictures Anniversary 3c Deep Violet
- 1945 Florida Centenary 3c Bright Red Violet
- 1945 United Nations Conference 5c Ultramarine
- 1945 Iwo Jima (Marines) 3c Yellow Green
- 1945 Franklin D. Roosevelt 1c Blue Green
- 1945 Franklin D. Roosevelt 2c Carmine Rose
- 1945 Franklin D. Roosevelt 3c Purple
- 1945 Franklin D. Roosevelt 5c Bright Blue
- 1945 Army 3c Olive
- 1945 Navy 3c Blue
- 1945 Coast Guard 3c Bright Blue Green
- 1945 Alfred E. Smith 3c Purple
- 1945 Texas Centenary 3c Dark Blue
- 1946 Merchant Marine 3c Blue Green
- 1946 Veterans of World War II 3c Dark Violet
- 1946 Tennessee Sesquicentennial 3c Dark Violet
- 1946 Iowa Centenary 3c Deep Blue
- 1946 Smithsonian Institution Centenary 3c Violet Brown
- 1946 Kearny Expedition Centenary 3c Brown Violet
- 1947 Thomas Alva Edison 3c Bright Red Violet
- 1947 Joseph Pulitzer 3c Purple
- 1947 Postage Stamp Centenary 3c Deep Blue
- 1947 CIPEX Souvenir Sheet Franklin 5c Blue and Washington 10c Brown Orange
- 1947 Doctors 3c Brown Violet
- 1947 Utah Centenary 3c Dark Violet
- 1947 Constitution (Old Ironsides) Launching Sesquicentennial 3c Blue Green
- 1947 Everglades National Park Dedication 3c Bright Green
- 1948 George Washington Carver 3c Bright Red Violet
- 1948 California Gold Centennial 3c Dark Violet
- 1948 Mississippi Sesquicentennial 3c Brown Violet
- 1948 Four Chaplains 3c Gray Black
- 1948 Wisconsin Centenary 3c Dark Violet
- 1948 Swedish Pioneer Centenary 5c Deep Blue
- 1948 Progress of Women Centenary 3c Dark Violet
- 1948 William Allen White 3c Bright Red Violet
- 1948 U.S.-Canada Friendship Centenary 3c Blue
- 1948 Frances Scott Key 3c Rose Pink
- 1948 American Youth 3c Deep Blue
- 1948 Oregon Centenary 3c Brown Red
- 1948 Harlan Stone 3c Bright Violet
- 1948 Palomar Mountain Observatory Dedication 3c Blue
- 1948 Clara Barton 3c Rose Pink
- 1948 Poultry Industry Centennial 3c Sepia
- 1948 Gold Star Mothers 3c Orange Yellow
- 1948 Fort Kearny 3c Violet
- 1948 Volunteer Firemen Tercentenary 3c Bright Rose Carmine
- 1948 Indian Centennial 3c Dark Brown
- 1948 Rough Riders Anniversary 3c Violet Brown
- 1948 Juliette Gordon Low 3c Blue Green
- 1948 Will Rogers 3c Bright Red Violet
- 1948 Fort Bliss Centennial 3c Henna Brown
- 1948 Moina Michael 3c Rose Pink
- 1948 Gettysburg Address Anniversary 3c Bright Blue
- 1948 American Turners 3c Carmine
- 1948 Joel Chandler Harris 3c Bright Red Violet
- 1949 Minnesota Centennial 3c Blue Green
- 1949 Washington and Lee University Bicentenary 3c Ultramarine
- 1949 Puerto Rico Election 3c Green
- 1949 Annapolis Tercentenary 3c Aquamarine
- 1949 Grand Army of the Republic 3c Bright Rose Carmine
- 1949 Edgar Allan Poe Centennial 3c Bright Red Violet
- 1950 American Bankers Association Anniversary 3c Yellow Green
- 1950 Samuel Gompers Centennial 3c Bright Red Violet
1950 National Capital Sesquicentennial
- Statue of Freedom 3c Bright Blue
- Executive Mansion 3c Deep Green
- Supreme Court Building 3c Light Violet
- United States Capitol 3c Bright Red Violet