Drawing courses often feature a time-honored tradition of working from plaster casts, as you can see in this old photograph below. At Fairmont State, Lynn Boggess followed this tradition and procured several plaster casts of hands for this students to work from. Under the photo you can find some of the drawings I made from those casts.
"Hand 1" conte on paper, 10"x14", private collection, Atlanta, GA
"Hand 2" conte on paper, 10"x13.5"
"Hand 3" conte on paper, 10"x13.5", private collection