1. H69.38.432 Object number: H69.38.432 Object name: contract; diagram; document; envelope; I.O.U.; memo; notes; order; receipt Date made: 1882, 1884 (see remarks)
2. H69.38.433 Object number: H69.38.433 Object name: calculations; diagram; document; envelope; letter; notes Date made: 1883,1885
