Etude music magazines, lot of 20 issues, vintage 1940s & 50s

Here's a lot of old Etude music magazines - ten issues from the 1940s, and ten issues from the 1950s. Most of these are in good shape, a few are missing covers. There's also one issure from the 1930s, this one looks rough, missing the cover and a couple of pages, as well as having wear to the edges of the book.