King Eiders

Series: Federal Duck Stamp

First Day of Issue Date: January 1, 1991

First Day of Issue Location: TBA

"F" Flag

First Day of Issue Date: January 22, 1991

First Day of Issue Location: TBA

Makeup Rate

First Day of Issue Date: January 22, 1991

First Day of Issue Location: TBA

Steam Carriage 1866

Series: Transportation

First Day of Issue Date: January 25, 1991

First Day of Issue Location: Tucson, AZ

Founding of Switzerland

First Day of Issue Date: February 22, 1991

First Day of Issue Location: TBA

Vermont Statehood

Series: Statehood

First Day of Issue Date: March 1, 1991

First Day of Issue Location: Bennington, VT

Fawn

Series: Flora and Fauna

First Day of Issue Date: March 11, 1991

First Day of Issue Location: TBA

Flag Over Mt. Rushmore

First Day of Issue Date: March 29, 1991

First Day of Issue Location: TBA

Dennis Chavez

Series: Great Americans

First Day of Issue Date: April 3, 1991

First Day of Issue Location: Albuquerque, NM

Flower

First Day of Issue Date: April 5, 1991

First Day of Issue Location: TBA

Lunch Wagon 1890s

Series: Transportation

First Day of Issue Date: April 12, 1991

First Day of Issue Location: Columbus, OH

U.S. Flag, Olympic Rings

Series: Olympic Games

First Day of Issue Date: April 21, 1991

First Day of Issue Location: Atlanta, GA

Harriet Quimby and Early Plane

Series: Pioneers of Aviation

First Day of Issue Date: April 27, 1991

First Day of Issue Location: Plymouth, MI

Savings Bonds

First Day of Issue Date: April 30, 1991

First Day of Issue Location: TBA

29¢ Love

Series: Love

First Day of Issue Date: May 9, 1991

First Day of Issue Location: Honolulu, HI

52¢ Love

First Day of Issue Date: May 9, 1991

First Day of Issue Location: TBA

Overhead View of Balloon

First Day of Issue Date: May 17, 1991

First Day of Issue Location: TBA

William T. Piper and Piper Cub Airplane

Series: Pioneers of Aviation

First Day of Issue Date: May 17, 1991

First Day of Issue Location: Denver, CO

Eagle and Shield

First Day of Issue Date: May 21, 1991

First Day of Issue Location: TBA

William Saroyan

Series: Literary Arts

First Day of Issue Date: May 22, 1991

First Day of Issue Location: Fresno, CA

Canoe 1800s

Series: Transportation

First Day of Issue Date: May 25, 1991

First Day of Issue Location: Secaucus, NJ

Tractor Trailer

Series: Transportation

First Day of Issue Date: May 25, 1991

First Day of Issue Location: Secaucus, NJ

Flags on Parade

First Day of Issue Date: May 30, 1991

First Day of Issue Location: TBA

Fishing Flies

First Day of Issue Date: May 31, 1991

First Day of Issue Location: TBA

Hubert H. Humphrey

Series: Great Americans

First Day of Issue Date: June 3, 1991

First Day of Issue Location: Minneapolis, MN

Cole Porter

Series: Performing Arts

First Day of Issue Date: June 8, 1991

First Day of Issue Location: Peru, IN

Domestic Express Mail (Eagle)

First Day of Issue Date: June 16, 1991

First Day of Issue Location: TBA

Antarctic Treaty

First Day of Issue Date: June 21, 1991

First Day of Issue Location: Washington, DC

American Kestrel

Series: Flora and Fauna

First Day of Issue Date: June 22, 1991

First Day of Issue Location: TBA

Eastern Bluebird

Series: Flora and Fauna

First Day of Issue Date: June 22, 1991

First Day of Issue Location: TBA

Operations Desert Shield/Desert Storm

First Day of Issue Date: July 2, 1991

First Day of Issue Location: TBA

Priority Mail (Eagle)

First Day of Issue Date: July 7, 1991

First Day of Issue Location: TBA

Olympic Games

Series: Olympic Games

First Day of Issue Date: July 12, 1991

First Day of Issue Location: Los Angeles, CA

Fishing Boat, Type I

First Day of Issue Date: August 8, 1991

First Day of Issue Location: TBA

Numismatics

First Day of Issue Date: August 13, 1991

First Day of Issue Location: TBA

Basketball Centennial

First Day of Issue Date: August 28, 1991

First Day of Issue Location: TBA

Comedians

First Day of Issue Date: August 29, 1991

First Day of Issue Location: TBA

Circus Wagon 1900s

Series: Transportation

First Day of Issue Date: August 31, 1991

First Day of Issue Location: Syracuse, NY

International Express Mail (Eagle)

First Day of Issue Date: August 31, 1991

First Day of Issue Location: TBA

1941: A World at War

Series: World War II

First Day of Issue Date: September 3, 1991

First Day of Issue Location: Phoenix, Arizona

Cardinal

Series: Flora and Fauna

First Day of Issue Date: September 4, 1991

First Day of Issue Location: Baltimore, MD

District of Columbia Bicentennial

Series: Statehood

First Day of Issue Date: September 7, 1991

First Day of Issue Location: Washington, DC

Jan Matzeliger

Series: Black Heritage

First Day of Issue Date: September 15, 1991

First Day of Issue Location: Lynn, MA

Wood Duck

Series: Flora and Fauna

First Day of Issue Date: September 25, 1991

First Day of Issue Location: Milwaukee, WI

USPS Logo/Olympic Rings

Series: Olympic Games

First Day of Issue Date: September 29, 1991

First Day of Issue Location: Orlando, FL

Space Exploration

Series: Space Achievement

First Day of Issue Date: October 1, 1991

First Day of Issue Location: Pasadena, CA

Madonna and Child, by Antoniazzo Romano

Series: Holiday Celebration: Christmas

First Day of Issue Date: October 17, 1991

First Day of Issue Location: Houston, TX

Santa Claus

Series: Holiday Celebration: Holiday

First Day of Issue Date: October 17, 1991

First Day of Issue Location: Santa, ID