Islamic seal impressions and ownership stamps online

Chester Beatty Library Seals Project
http://www.cbl.ie/islamicseals/

Islamic Manuscripts Collection, University of Michigan
http://www.flickr.com/photos/97661713@N07/sets/72157634195731483/


Iraqi manuscript libraries  ( Middle East Librarians Association's Committee on Iraqi Libraries )
http://oi.uchicago.edu/OI/IRAQ/mela/LibraryStamps/LibraryStamps.htm

Library of the Institut d'Égypte
http://ancientworldbloggers.blogspot.com/2011/12/library-stamps-from-institut-degypte.html

Catalogue of seals and talismans housed at the Ashmolean from the 8th to 19th century Islamic world, by Ludvik Kalus (published Oxford, 1986).
http://jameelcentre.ashmolean.org/collection/7/10228

Please let us know about similar collections.