author
A little-known early 20th-century children's writer, Rosalie G. Mendel is remembered for simple, picture-rich books that introduced young readers to animals and sea life. Her surviving works have the feel of cheerful primers, meant to spark curiosity through short text and vivid illustration.
Very little biographical information about Rosalie G. Mendel could be confirmed from reliable online sources available during this search. She appears to be an author of children's books from the 1910s, and her name is linked most clearly with My Book of Ten Fishes, published in 1916 and now available through Project Gutenberg.
Book listings also associate her with similarly themed juvenile titles such as My Book of Ten Animals and Robbie's Dog on the Farm. Taken together, these suggest she wrote brief, accessible books designed to help children learn about animals through a combination of basic facts, storytelling, and illustration.
Because so little verified personal history is easy to find, her work itself remains the best introduction: small educational books created for young readers in the early twentieth century, with an emphasis on curiosity, nature, and approachable learning.