"Encyclopedia of the Colors of United States Postage Stamps", Vols. 1-4,

by R.H. White, 1981 in (2) maroon 3-ring binders and slipcases w/gold printing. Only 500 sold. This set is an exceptional & invaluable resource, w/many, many color plates showing various color shades of stamps from #1-547 & C23. Excellent condition

1581//1612 USPS Book "The Americana Series" Issues of 1951-81",

hard bound book published in 1981 by U.S. Postal Service, VF NH, incls 50¢ to $5; (23) issues present of (27) discussed. Binding & covers in very good condition; pages have some foxing, particularly end pages. Face value is $10.58