Kans.-Nebr. Precancels

From Counterfeit Kansas-Nebraska Overprints on 1922-34 Issues y Robert Schoen and James T DeVoss.

On April 30, 1929 there appeared in the Postal Bulletin an order of Third Assistant Postmaster General R.S. Regar in which the postmasters in Kansas and Nebraska were told not to precancel these overprinted stock. The same order advised these postmasters that sufficient stock of other regular issues in required denominations should be kept on hand for precancel requirements. Precancels of the Kansas-Nebraska issue are very hard to locate, Some larger towns precanceled only one value.. During Christmas rush towns were authorized to precancel during the busy time as a time saver.. Smaller offices used the 25 subject handstamp instead of the 100 subject electro and as few as 25 of a kind were precanceled. There are about 175 varieties of the Kansas-Nebraska overprints with precancels.(many were precanceled as favors) Inverted Precancels: There are reported to be 25 Clay Center Kans, precancels (25-subject handstamp)
A few other references are: Precanceling of Kansas-Nebraska overprints by Asolph Gunesh, also Victor B Smith's collection of Nebraskas Overprints with precancels.