1950 Postal Card Of Defunct US Philatelic Organizations

Nothing more that a curiosity but I found a couple of postal cards "commemorating" a 1950 event of the following institutions ... interestingly both organizations are disbanded today, with surprisingly little history about them that I can come up with on the internet:

(1) The Society of Philatelic Americans; and
(2) The National Philatelic Museum (Philadelphia, PA)

Here are the postal cards:



In a nutshell, what I am aware of is the Society of Philatelic Americans was founded in the 1890's as the Southern Philatelic Association with a name change to Society of Philatelic Americans in 1927, and they disbanded in the 1980's (1983, I believe) and were, in essence, a rival organization to the APS in its day. Curiously, I did find one brief reference in a blog that one reason the organization was disbanded was "after a reported shortfall in the accounting of its sales division" but no further reference was made about it.

The National Philatelic Museum, located in Philadelphia, was (according to Wiki) a short-lived Museum lasting only about 10 years, founded in 1948 and dissolved circa 1959, with its holdings transferred (or donated?) to the Cardinal Spellman Philatelic Museum in Weston, Massachusetts upon its opening in the early 1960s. However, I can find little else about the former National Philatelic Museum, it's specific holdings, and/or the history of its founder, a banker by the name of Bernard Davis.

I'd be curious if any SCF members have any additional information. It seems to be relatively current history for which very little information can be found (at least not on the internet).