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Google Book Search has an e-book version of "Thanksgiving: Its Origin, Celebration and Significance as Related in Prose and Verse" by Robert Haven Schauffler, originally published in 1907. Robert Haven Schauffler was an Austrian-American musician, author and poet, he edited numerous collections of prose and verse dedicated to American holidays.
Southern Belle over at Homeschooling 4 Free has an excellent list of Thanksgiving resources, including lapbooks, mini-books, printables and many more. Check it out!