Military unit cachets for free of charge mail 1919 - 1922
This thematic will for the moment not be presented on this site as a compendium in German, English and partly in Latvian, where more than 650 different cachets are registered: "Studienmanuskripte der Forschungsgemeinschaft Lettland im BDPh e.V., Folge 17 / Truppensiegel für portofreie Sendungen 1919 - 1922 / Military unit cachets for free of charge mail 1919 - 1922 von Juris Mors" can be ordered as a CD from me - totally 343 pages. The compendium contains a small historic review of many military units, many of the cachets are reproduced and there are also a lot of items shown from different collectors.

Price, US$ 49.