This folder contains correspondence and other documents relating to surveys of mining properties in the Sudbury district of Ontario. Included are letters from Edison, Walter S. Mallory, and T. J. Ryan, a Department of Crown Lands agent. Most of the correspondence pertains to Miller's activities and travel arrangements. Other subjects include supplies and insurance, the transmittal of funds, and ore samples.

Approximately 20 percent of the documents have been selected. Most of the selected items are signed by Edison.