My post "Extraordinary early 20th century book covers from Japan" got a good response so I'm doing an immediate follow-up, this time featuring magazine covers. I'll just repeat myself:
These covers come from Bookcover Design in Japan 1910s-40s (ISBN 4-89444-426-7) edited by Masayo Matsubara. Published in 2005 by PIE Books, this incredible book is already out-of-print and becoming hard to find (it was actually hard for me to find and I spend hours per day searching for rare books). This book is in Japanese only, but of course you need it for the 650 illustrations.
I tried to alternate the charming children's covers with the creepy modernist covers, but I soon lost the ability to tell one type from the other.