There are countless Czech examples of liberation overprints. Well, perhaps not countless
, as a few people have written on them.
For one, the Czechoslovak Philatelic Society of Great Britain publishes a resource, including a companion CD, that addresses these. I don't have it; every time I look at their list of publications, I can't decide which ones not
to order, and I just back away from the computer.
Here is their description:
No. 25: Compendium of 1944-1945 Liberation Overprints, by Karel Holoubek, additional material and translation by Robert J. Hill. 314p, plus a CD with colour illustrations throughout. 860gm. 2012. The results of a lifetime's investigation into the documentation and memories of those who were involved with the production of the overprints in a revolutionary time. #8356;17.50 + p&p.
A list of their monographs is found at this link:
allet, click at your own risk)http://www.czechout.org/pages/monographs.htm