Czechoslovakia Cinderellas

I came across several Czech cinderellas and would appreciate any information SCF members might be able to provide.

The first group is dated 1931 and features what appear to be literary figures.








Google Translate indicates the inscription on this one reads "in favor of the association for the care of orphans."




This one isn't Czech per se but was issued by the Czech-American non-profit The Council for Higher Education (Matice Vyššího Vzdìlání). The stamps is affixed to what may have been the organization's newletter (the date under the stamp is 15 November 1936). According to its website, the group was founded in 1902 to "promote Czech, Slovak, and Ruthenian heritage and culture through the encouragement and support of higher education in the United States and Canada."






Here is another Czech-American charity label I found while going through a box of worldwide stamps from my father's collection.



I've found little useful information on them apart from an ebay listing by Rigastamps indicating that these fundraising vignettes were issued by the American Czechoslovak World War Disabled Veterans and are listed in Mosbaugh's U.S. All Funds Seals Catalog in the section on Ethnic Seals. That listing identified 1934 as the year of issue and I assume it derives from the Mosbaugh catalog. An image on another seller's listing showed the stamps were also printed in red, green and blue.

Any additional background on any of the above items would be appreciated.