Files include a valuable print registry which documents every lithograph executed during his career and the number of sales for each one. Also donated were inventory lists for binders containing original drawings, most of which were taken over by executors of the Estate for sale to benefit several charities listed in his will. A small amount of income tax records and account books were retained to attest to his financial success. There is a small amount of material that documents his own collection of works by other major Canadian artists which he sold over the years. Records also comprise some early price lists, resumés and biographies.
See oversize material for Nichols' original inventory binder. It is located in Volume 30.