author
d. 1942
I couldn’t confidently identify which author this refers to from the name and date alone. There are several people named Helen Hill, and the best-known authorially notable one I found died in 2007, not 1942.

by Helen Hill, Violet Maxwell
I wasn’t able to verify a matching author named Helen Hill with the death year 1942 from reliable sources available here.
The clearest literary match I found was Helen Wingard Hill (1970–2007), an American artist, filmmaker, writer, teacher, and activist, but that does not fit the date you gave. I also found Helen Hill Miller (1899–1995), a journalist and author of more than 20 books, which is a different person again.
If you mean a specific Helen Hill, please send one more detail—such as a book title, nationality, middle name, or approximate birth year—and I can return a clean author profile.