I just came across this blog article authored by a person whose aunt worked at Adventure magazine, probably as a manuscript reader. It has letters from her aunt to people whose mss was rejected, and an inter-office memo of the time.
Thought it was worth sharing with you.
I was very happy to read your comment on the post about my Aunt Connie at Adventure Magazine. Thank you so much for linking to my post. I will be writing more about my aunt who worked at Adventure, and will be looking forward with pleasure to reading your blogs.
Best Wishes- Alexandra Sellon