Material either addressed to or collected by Howell B. Eskridge who worked as an engineer for the Delaware Land Development Co. and Shapdale, Inc., from 1928 until du Pont's death in 1965. After that, he supervised property until the liquidation of the estate.

The correspondence addressed to du Pont, H.B. Eskridge, E.E. Edinger, Mildred Pike (du Pont's personal secretary), B.T. Converse, J. du Pont McConnell. Topics pertain to du Pont's properties at Bellevue, Del., Fair Hill, Md. and Point Happy, CA: construction and improvements of buildings, sport facilities, barns; construction of bridges over highway and creeks in Cecil County, Md.; equipment, instruments and tool selection and purchases; planting and fencing on the property; horse raising and training, stock raising, dog feeding, and property sale.

Includes descriptions, maps, drawings and plans of property, acreage assessments, estate appraisals and inventories; building plans, specifications and estimates; numerous trade catalogs; invoices for construction and maintenance jobs; newspaper clippings; photographs, fabric and wallpaper samples.

Contains material related to du Pont's personal estate at Bellevue with information on the companies organized by du Pont for which no other records were found in this collection: Hall, Inc., Bellevue Hills, Inc.

Contains material related to du Pont's estate at Fair Hill, Md., including land owned by Foxcatcher Livestock Co., Springlawn Corporation, Fair Hill, Inc., Passyunk, Inc., Blandale, Inc.

Includes material on du Pont's estate in California that supplements papers of Point Happy, Inc.

Miscellaneous contains material similar to a) and b) sections, but without specification to which estate it relates; information on jobs at other locations: Delaware Trust Building, Fairfax, Pennyhill and Wilmington Manor properties, Westover Hills development, Wilmington Country Club; work and personal files of H.B. Eskridge, starting with his job for Allen J. Saville, Inc. before joining du Pont's staff; general files on construction and improvements. Files pertain to the maintenance and sale of du Pont's estate at Bellevue and contain correspondence, reports and memos from Eskridge to executors of estate, maintenance proposals, agreements and invoices, property descriptions, tax statements and photographs.