The only release I could find was one on a 1956 EP, but that may not have been the first. https://www.discogs.com/release/16457553-Charles-Magnante-Accordion-Variety-Concert-Volume-1

Lorne wrote:

This composition is listed in The Library of Congress Catalog of Copyright Entries for January - June 1956 on p. 367, so that might provide some corroboration for this release being the first. 
https://www.google.ca/books/edition/Catalog_of_Copyright_Entries/ry0hAQAAIAAJ?hl=en&gbpv=1&dq=%22magnante%22+%22accordion+boogie%22&pg=PA367&printsec=frontcover

I found that "discogs.com" link too.
So when you additionally found that the entry in the "Catalog of Copyright Entries" gives the same year, it is confirmed.
Charles Magnante gramophone records are probably quite rare, that's why his recordings are not even on the Internet and we can't hear them.
They are only written about.
 

Roman wrote:

mroldies wrote:

Lorne wrote:

This composition is listed in The Library of Congress Catalog of Copyright Entries for January - June 1956 on p. 367, so that might provide some corroboration for this release being the first. 
https://www.google.ca/books/edition/Catalog_of_Copyright_Entries/ry0hAQAAIAAJ?hl=en&gbpv=1&dq=%22magnante%22+%22accordion+boogie%22&pg=PA367&printsec=frontcover

I found that "discogs.com" link too.
So when you additionally found that the entry in the "Catalog of Copyright Entries" gives the same year, it is confirmed.
Charles Magnante gramophone records are probably quite rare, that's why his recordings are not even on the Internet and we can't hear them.They are only written about.
 

There seem to be quite a few videos on YouTube that claim to be authentic Magnante recordings. There's even one live video form 1946.

 

Roman,
I was hasty with the claim that Magnante's recordings are not on YouTube. They are and a lot. It is necessary to search well.
But unfortunately, I haven't found "Accordion Boogie" yet.