Carrier financial ledger; Wichita Falls construction costs; Prairie Pipe Line Company - financial documents; Atlas Radio Relay Systems and Laurel Pipe Line Company; Sinclair Pipe Line Company - vouchers and maps; Northern Illinois Gas Company; Sinclair-Pure Microwave System and Pure Transportation Company, 1905 - 1963

Carrier financial ledger (1956); Wichita Falls loading rack detail of construction costs (1948); Prairie Pipe Line Company - original pipeline cost data (1905-1937); Atlas Radio Relay Systems - abstract of investment facilities after expansion by Laurel Pipe Line Company (1949-1960), property inventory of expansion by Laurel (1959); Sinclair Pipe Line Company - miscellaneous field connections closeout vouchers (Houston, Corpus Christie, etc) (1958); Sale of Illinois property to Northern Illinois Gas Company (1953-1955); Sinclair-Pure Microwave System sale of 5% interest to Pure Transportation Company (1957); Sinclair Pipe Line Company state pipeline maps by counties (n.d); Abstract of Chicago East pipelines (1963)