Search for occupational therapy books from eBook Central (formerly ebrary) using the search box.
You can also search the library catalog. You can limit your results to e-books, sort your results by copyright and go to the end of the list and work backward.
Books you might be interested in:
Breines, E. B. (2013). Occupational Therapy Activities. Somerset, NJ, USA: John Wiley & Sons.
Boniface, G. & Seymour, A. (2011). Using Occupational Therapy Theory in Practice. Hoboken, GB: Wiley-Blackwell.