From Introduction: "The investigations presented in this bulletin have been undertaken by the bureau with a view to a better understanding of the conditions which confront the producer of commercial feldspar and also with the object of determining wherein the various deposits of feldspar differ."

Postcard image of uniformed soldiers standing in a curving line, with handwritten text in the lower-left corner: "The Mess Line. Camp MacArthur. Waco, Texas." Rows of large tents are visible to the left of the line and mess hall. Handwritten text addressed to Miss Ethel Reser and postmarked 1918 says: "Are you taking good care of the dogs? How's your lazy dad? This is how your uncle gets his eats. Al"

Client card describing work completed at the Roman Bronze Works Foundry for Mr. Nathaniel Choate, including a job number, brief description, monetary amount, and dates associated with each entry. Pieces included: "Doorknocker", "Pair of Bookends" (Repatine), and "Small Standing Horse".

A photograph print showing the Reading Railroad (RDG) 597, 4-6-0 (class L-5sc) camelback, Coatesville, PA.

A photograph print showing the Pennsylvania Railroad (PRR) 1627, 2-8-2 (Class L-1s), Thorndale, PA. [Possibly a Charles L. Vineall photo]

From purpose and scope: This report provides basic information on the ground-water resources of Chester County, Pennsylvania, which is an area of about 760 square miles (1970 meters) in southeastern Pennsylvania. It discusses the availability and quality of the water in the water-bearing units in the county and the relation of the ground water to surface water.

The model discussed in this report simulates recharge to, flow through, and discharge from the water-table aquifer representative of most of Chester County, Pennsylvania. It includes maps and graphs.

From introduction: This report describes rainfall-runoff modeling for three subbasins of the West Branch Brandywine Creek basin. Effects of increased runoff from continued urbanization of the basin and of proposed flood-control structures for both the present and projected population are evaluated for the West Branch Brandwyne Creek at Coatesville and Modena and for Sucker Run at State Route 82.