Envelopes #502-534, 1919-1921, undated

#502: Painting by Lieut. Lemordant, purchased by Helen Clay Frick, undated

#506: Baltimore & Ohio Railroad Co. bonds, 1919-1920

#507, 507 A: Ten paintings purchased from the Estate of Virginia P. Bacon; Duveen Brothers re: portrait of Lady Meux, 1919, 1921

#510 A: Aeolian Co. re: work to be done on the organ at Prides Crossing, 1919-1920

#512: Lord Electric Co. re: vacuum cleaner installation, etc., 1919

#513: Interborough Rapid Transit Co. bonds, 1919-1920

#515: Riter-Conley property re: Elizabeth A. McFadden ground rent, undated

#516: Claim of Eugene J. Sauvageau, 1919

#517: Creelman, Alice B. re: Holbein portrait and "Madonna and Child," 1919-1920

#521: Goldfield Consolidated Mines Co. stock, 1919

#523: Proposed subway for Pittsburgh, 1919

#524: Riter-Conley property re: taxes, 1919

#528: Cerro de Pasco Copper Corporation, undated

#529 B-C: A. Overolt & Co. re: liquidation, 1919

#531: Forbes, B.C. re: contribution to Forbes Financial Magazine, 1919

#534: Comfort station for Frick Park, Homestead, Pa., 1920