There are several sampler books on the market, but here are some from Eleanor Burns. "Egg Money Quilts" is 30's, "Victory Quilts" is 40's. " Pioneer Sampler" and "Underground Railroad" are 1800's. Her books are well written, easy to follow the directions and some history as well.
She is one of my favorites. I like others too, but in my opinion, her books are the easiest to use.
And like someone said the Marcia Hohn's Quilters Cache is a great place to get free patterns. Also a great place to look for ideas and gives you an idea of how hard or easy a block will be before splurging on a book.
Longarm