author
A New York rare-book dealer with a sharp eye for unusual editions, he left behind a fascinating snapshot of the early 20th-century book world. His surviving catalogue shows the taste, salesmanship, and collector culture that shaped literary commerce in the 1910s and 1920s.

by Harry F. Marks
Harry F. Marks is best known today through Harry F. Marks Catalogue No. 4, 1919, a bookseller's catalogue that offers a lively look at the rare and collectible book trade in New York. Project Gutenberg lists that catalogue under his name, and the work itself presents a carefully chosen selection of "choice and unusual books," suggesting a dealer writing for serious collectors.
Other historical references describe him as an established New York bookseller. A Salisbury House and Gardens article notes that by 1925 he had a shop on West 47th Street and was known for fine bindings and high-end sporting books. Writing on The Endless Bookshelf, Henry Wessells also points to Marks's role in the American rare-book scene, including a 1923 Arthur Machen-related exhibition and catalogue.
Little easily verifiable biographical detail appears in the sources I found, so it is safest to remember him less as a conventionally documented author and more as a notable bookseller whose catalogues now serve as historical records of collecting taste, pricing, and literary fashion in early 20th-century New York.