Q. May I get special collection items through interlibrary loan?
Special collection are, well, special. First check online repositories and the HathiTrust (as most libraries are digitizing their special collections). The research support librarian can help you with this. Some library do lend special collection items (at a cost). The Library of Congress lends some rare or hard-to-get items, but they require 20 days to process requests, and, all loaned items are for in-library-use only. So, the answer to this question is that the ILL librarian will do their best and will communicate with you on the likelihood of getting the item.