- CollectionDX19 - Cotton Family Papers
- SeriesH - Arthur Tilney & E. Frances Cotton : 262 to 265
- Item262 - Letters from Mabel Mary Cotton to A.T & E.F Cotton
- Item263 - Letters from Karl von Stieglitz to A.T. & E.F. Cotton
- Item264 - Letters E. Frances Cotton: Dr. Story
- Item265 - E. Frances Cotton: miscellaneous correspondence