A Guide to the Emil Grosswald Papers
- Held at the Archives of American Mathematics, Center for American History, University of Texas at Austin.
- http://www.lib.utexas.edu/taro/utcah/00224/cah-00224.html

Fermat's Little Theorem
- Historical comments by John Cosgrave.
- http://www.spd.dcu.ie/johnbcos/fermat's_little_theorem.htm

Mathematical Manuscripts at Trinity College Cambridge
- Includes papers of Davenport, Hardy, Littlewood, Ramanujan.
- http://rabbit.trin.cam.ac.uk/~jon/Msscolls/type.html#Maths

Historical Essays in Number Theory
- MSs by Peter Roquette.
- http://www.rzuser.uni-heidelberg.de/~ci3/manu.html

History of Arithmetic and Number Theory
- A bibliography by D. Joyce.
- http://aleph0.clarku.edu/~djoyce/mathhist/arithmetic.html

Historical Things in Number Theory
- Collected by Keith Matthews.
- http://www.maths.uq.edu.au/~krm/N14.html