Weights and measures -- Maryland
Subject Source: Unspecified ingested source
Found in 1 Collection or Record:
Overview John H. Alexander (1812-1867) had a varied career as a lawyer, civil engineer, surveyor, geologist, and teacher at the universities of Pennsylvania and Maryland. As Chief Engineer of Maryland, he surveyed the Baltimore and Susquehanna Railroad. He also conducted a coast survey for the federal government, and, as Maryland's first geologist, he mapped coal deposits in the state. Important subjects documented in the collection include the Chesapeake and Ohio Canal, slack water navigation, canal...