Michael Slattery (m.slattery@tcu.edu) has compiled a set of geomorphic images on a CD that began to be distributed at the Los Angeles AAG meetings in March, 2002.   From Mike: 

"The CD-ROM of geomorphological images is now ready! ... There are 870 quality images on this CD and it should serve as a good teaching resource for faculty and students.  If you would like to order your copy please mail a cheque for $25 US, made payable to the "Geomorphology Specialty Group", to:   Dr. Mike Slattery,  Dept. of Geology,  PO Box 298830,  Texas Christian University,  Fort Worth, TX 76129."

Samples of four random images from the CD can be seen here.  These are only four of the 870 on the disk.
 

A few other images are available here online:
Paleozoic glacial striae, Australia - Alex Shepherd
Sierra Nevada glacial features - Allan James