 An advertisement of the period specifically lists the Daguerreotype method as being used by Forshew in 1851 

Forshew also worked with tintype photography during this period.He created "carte de visite" (visiting cards), cabinet cards, and stereoviews.Forshew did a brisk business during the Civil War providing "cartes de visite" to transient soldiers as well as to the families and friends on the home front who wanted to send their images to soldiers away from home on the battlefronts.