Yes, you may visit and use materials in the Special Collections at ASU and WCU (including checking out items in the circulating collections if you are current UNCA student, staff, or faculty). Do be aware that Special Collections are often reduced in hours compared to other areas of the library and often include both open and closed sections with separate sets of hours, especially around university breaks, so it is always a good idea to check the homepage and hours before you leave. Digitized content is also available freely online for all three schools (see homepages below), but is in no way complete compared to their full print collections.
Some helpful pages:
UNCA's Special Collections Homepage
ASU's Special Collections Homepage
WCU's Special Collections Homepage
Let us know if you have any questions here: http://libanswers.unca.edu
