[2][3] A large portion of his work focused around Pennsylvania.

He is considered the most prolific maker of Pennsylvania panoramas of the mid 19th-century.

[5] Fowler started his own business as a cartographer focusing on panoramic maps.

[1] His work is also held in the collection of Pennsylvania State University, Yale University, and the Boston Public Library.

[4] Fowler died of a heart attack in New York in 1922 and was interred in Trenton, New Jersey.