About 1 ounce of ham is enough for a large biscuit sandwich for a party, and 2 ounces for the larger sort, made with baker’s rolls, for sale at lunch counters. A ham that weighs 14 pounds raw will make about 140 of the festival sandwiches or 75 for lunch counters. Another way besides slicing the ham for sandwiches is to take the pieces that will not make good slices for the plates and chop fine, season with pepper and warm butter and a little made mustard, and spread the mince between the split biscuits.
Whitehead’s Family Cook Book, 1891