thaddeus mortimer fowler, often credited as t.m. fowler, was an american cartographer born in lowell, massachusetts in 1842. he is best known for his work on panoramic maps and is considered the most prolific maker of pennsylvania panoramas of the mid 19th-century. fowler was a soldier in the united states civil war and was injured during battle. he worked for his uncle who was a photographer before starting his own business as a carto…