
Charles Lang Freer's vouchers for art purchases in 1906 and 1907.
Correspondence between Charles Lang Freer and Gaston Migeon.
Correspondence between Charles Lang Freer and Nan Ming-yuan (南明远).
Correspondence between Charles Lang Freer and J. M. Nulia.
Correspondence between Charles Lang Freer and J. Orange.
Correspondence between Charles Lang Freer and Chase S. Osborn.
Correspondence between Charles Lang Freer and Pang, Yuan-chi (Pang Yuanji; 龐元濟).
Letters to Charles Lang Freer from Robert S. Pardo.
Correspondence between Charles Lang Freer and Parke, Davis and Company.
Charles Lang Freer and his household employees used letterpress printing to create duplicate copies of outgoing correspondence from his Detroit home, between 1892 and 1910. These copies were subsequently bound in 30 volumes, their contents organized chronologically.