The background of each stamp design shows a detail of a photograph related to the respective scientific field celebrated on the stamp.

Early stamps, especially those produced over several years or in large quantities, can often be found in a range of differentiable colors.

Having these numbers handy will allow you to easily locate these stamps in the Scott catalogs and learn about their production and values.

The stamps are being issued in a pane of 20 to commemorate the 80th anniversary of Bugs Bunny's official screen debut.

The award will be presented in October 2021 because of the COVID-19 pandemic.

Along with featuring works by 12 artists, the pane of stamps commemorates the centenary of the 1913 Armory Show.

In recent years the number of U.S. Flag stamps issued has increased in frequency and in quantity.

The Fruits and Vegetables set of 10 nondenominated (55¢) stamps will be issued July 17 in a double-sided pane of 20.

The Old Man of the Mountain was likely formed after the retreat of glaciers 12,000 years ago. The first recorded mention of it dates to 1805.

There will be two prizes given to the winners: one for the best philatelic line and one for the best nonphilatelic line.

Also this week, the contents of a world’s fair letter mailed in 1902 lead to a surprising but subtle discovery, and comparing two assortments of worldwide stamps from the same mixture dealer.

Collectors can also order the packs of five if they have a postal use for additional stamped envelopes.

According to the APS these changes result from new and expanded services instituted during the COVID-19 pandemic.

Bugs Bunny made his first appearance on a U.S. stamp in 1997.

It appears that typography has a heavier gravitational pull for postage stamp users than does than looking at the design.

This stamp was issued in October 1916, and the earliest documented use is the 13th of that month.

The nondenominated (55¢) stamps will be issued July 1 in a pane of 20. New York City is the designated first-day city.

The Citizens’ Stamp Advisory Committee will soon start to answer the question of how the nation’s 250th anniversary will be celebrated on stamps.

The National Postal Museum will begin accepting submissions for the next awards for scholarship in postal history on Dec. 3.

California-based Stamps.com was the last remaining vendor of what the Postal Service called “customized postage.”