In the days before the USPS imposed minimum-size requirements, small covers could be sent both domestically and overseas at normal first-class postal rates.

Also this week, a review of a new book dedicated to stamps featuring Donald Trump, and a controversial design element forces recall of a Vatican City stamp for World Youth Day.

Entries with a touch of humor or irony stand the best chance of winning the contest.

In December 1919, the Canal Zone issued two postage due stamps by overprinting and surcharging stamps of Panama in carmine ink.

Using stamps to sell (somewhat) related products was not unusual when stamps cost 3¢ each.

Also this week, climate change themes on postage stamps, and a word search puzzle focusing on endangered species pictured on stamps.

Specifically, the errors are postally used on-cover examples of the Pasqueflower stamp and Wood Lily stamp.

There are a lot of variables to freaks that make them difficult to catalog. But these stamps can be fun, too.

Careful examination is sometimes required when the same design is used for different stamps.

The recently discovered plate number block of the 1986 CIA Invert came from an intact plate strip of 20 from the second pane of 100 of the now famous error.

The federal duck stamp will reproduce Joseph Hautman’s acrylic painting of three tundra swans in flight.

Napex opens on June 2, the 70th anniversary of Queen Elizabeth’s coronation.

Also this week, our Stamp Market Tips columnists tip an attractive stamp from Hawaii issued in 1894, and a review of an assortment of stamps described as a “healthy six-continent mixture.”

Regardless of where the prisoners were housed, their mail was sent to New York City to be canceled and censored.

The stamps were issued in panes of 20 on Sept. 30, 2022, to commemorate Schulz’s 100th birthday.

The next contest will be announced in the June 12 issue of Linn’s.

National Geographic Explorer and photographer Joel Sartore took the photos featured on the stamps.

Until 2019, the show was the main event of the Federated Philatelic Clubs of Southern California. Since then, Sescal has been associated with the Philatelic Society of Los Angeles.

USPS art director Greg Breeding designed the 12 Waterfalls stamps using existing photographs.

Also this week, unissued Slovenian stamps get royal attention, and highlights from a review of a small assortment of used United States stamps issued between 1890 and 1915.