To determine the current state and use of Union Classification, I contacted 260 libraries of those ATS institutions
with valid websites and/or e-mail addresses as listed on the ATS website (many did not have current websites or
contact information) and received responses from 137. Also, four librarians from non-ATS institutions responded
to a follow-up post on the ATLANTIS listserv. Several of the schools represented in the responses share a library
with another responding school, so there was a total of 130 libraries represented by the 141 responses.