The Fairfax County Public Library (Virginia, USA) also lets you get a library card if you're not a state resident. It's $27/year and you send them a check. Here's the link that tells you this:
http://www.fairfaxcounty.gov/library/cardelgb.htm
I don't know if they'd let non-US residents apply - but I can't think of why they wouldn't. Wouldn't hurt to try/ask if you're not a US resident.
Anyway. Give them a try. As of this post, they've got 824 ePubs, 1892 PDFs and 269 mobi e-books.
Happy reading.
Marilyn