Writers in the Mountains: Hold workshops for all kinds of writing in the Catskills region.
You can actually get a grant to produce a book proposal. Example: https://press.princeton.edu/book-proposal-development-grants
Finding a book agent: https://www.janefriedman.com/find-literary-agent/
Have more resources to add? Contact the librarian listed on this guide.
Varies by publisher, but one example: