On Tuesday we read in linns.com that: This past September, the United States Postal Service published a new edition of its “Publication 100,” The United States Postal Service: An American History. The full-color, 156-page softcover book is available both in print and online.
The online version is free of charge and can be downloaded from here: https://www.fepanews.com/wp-content/uploads/2022/11/pub100.pdf
The price of the paper version is $15.99 and covers the cost of printing, shipping and handling. You can order it at https://store.usps.com/store and use product no. 843496.