1. Grand atlas. contains thirty two sheets relating to portions of the petroleum and bituminous coal fields and three sheets relating to the Quaternary Period : 1885 / [cartographic material] : Division III, Petroleum and bituminous coal fields, Part I Yale Public content 1885. 2012-03-14T13:27:17Z. 2012-07-11T15:16:54Z. Geological Survey of Pennsylvania. Second Geological Survey of Pennsylvania. English. Public. Pennsylvania. Quaternary.