Lyman Cornelius Smith hired the best engravers at Syracuse, The Spangler Brothers, Joseph Glahn and the young Albert Kraus. When Lyman sold the company to John Hunter, many of the workers moved to Fulton. The Spangler Brothers, A.E. and Milton were the first engravers to come, then Joseph Glahn and his sons (we don't know if any sons did engraving at Hunter Arms but one was an engraver for Colt)
According to many, one of the Spangler's was the best engraver of dogs and it is shown on a few examples one being President Harrison's Optimus Grade Lefever.

Signed Glahn Lefever

Joseph Glahn died in 1902 and then Albert Kraus was appointed master engraver. His dogs are also very nice.

Never saw mention of Loy ever engraving for Hunter Arms.