http://medcell.med.yale.edu/histology/
This is the yale med histology website. Excellent resource.
Histo Worldhttp://www.kumc.edu/instruction/medicine/anatomy/histoweb/
http://www.uni-mainz.de/FB/Medizin/Anatomie/workshop/EM/EMAtlas.html
Histology weblabshttp://astro.temple.edu/~sodicm/labs/index.htm
http://www.bu.edu/histology/m/index.htm
Excellent histology Atlas
Excellent Histology Flashcards
http://www.memorangapp.com/classroom/6713/Histology/Covers+all+the+TA+Review+Session+material+relative+to+histology/
http://www.lab.anhb.uwa.edu.au/mb140/Blue histology. This is seriously so much better than the histology teaching at uni.
https://www.youtube.com/playlist?list=PLD7882068A01C370FThis man is the histology God.
http://www.meddean.luc.edu/lumen/Meded/Histo/frames/histo_frames.htmlEssential
http://www.siumed.edu/~dking2/index.htmSouthern Illinois University School of Medicine Histology, excellent resource.