Wieland Willker on TC-List draws attention to this site which provides images of Mark from Codex Washintonensis (the Freer Gospels):
Gospel of Mark
The host is the Dept of Classics at Beloit College (Beloit, WI, USA).
Update: I have added the above link to my page on TC: On-line images. While there, I noticed that I had not added a link to the Biblical Manuscripts Project so I've now corrected that defect.