P. W. Shaefer (fl. c. 1855 - 1873) created several celebrated maps of Pennsylvania. He was a civil and mining engineer from Pottsville, Pennsylvania. His mapmaking career included the 1855 classic county map A Map of Schuykill County, Pennsylvania. He also published the first version of his Official Coal, Iron, Railroad and Canal Map of Pennsylvania and C. in 1863, which was so popular that it was included in the state document Reports of the Several Railroad Companies of Pennsylvania Communicated by the Auditor General of the Legislature. Versions of this map were published until around 1870 in the Auditor General’s reports. Shearer’s Historical Map of Pennsylvania was published in 1873 and subsequently republished by The Historical Society of Pennsylvania in 1875 with a 28 page booklet of information.