I'm posting this here because others may be interested. Walnut Creek (address below) maintains a FTP site (cdrom.com) that has a list of publications in /pub/pubs as well as other files.
Walnut Creek CDROM
1547 Palos Verdes Mall
Suite 260
Walnut Creek, CA 94596
+1 800 786-9907
+1 510 947-5996
+1 510 947-1644 FAX
wc.cdrom.com (192.153.46.254)
Note: I have never had any dealings with Walnut Creek.