[identity profile] secritcrush.livejournal.com 2008-03-12 06:30 pm (UTC)(link)
My childhood library had one as well. It wasn't so much that you couldn't check out adult books with a children's one, but your parent had to be there if you did. (It also had a much smaller limit on how many books you could check out.)

[identity profile] ellen-datlow.livejournal.com 2008-03-12 06:58 pm (UTC)(link)
I vaguely remember this (it was wayyy in my past :-) )