The Internet Archive people have been scanning like mad, old books and news. I'm constantly searching for newspaper strip collections, and have found items I don't see on any sites like DCM or TLB. (It's not always easy searching as you have to know the name of something before you can find it.) Not sure what DCM might be interested in.
This scan is something I just found tonight:
Skeezix Out West (1928.Reilly & Lee)
Is this something DCM would like?