Most large collections of garter snakes contain misidentified specimens.
"Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains"
Henry S. Fitch T. Paul Maslin
Even when made by hand, it is sometimes misidentified by the casual observer as the lockstitch because of the uniformity of both sides.
"The Invention of the Sewing Machine"
Grace Rogers Cooper