| 1921 LITTLE MARY Ship Construction Patent Print |
| 1921 CALLERY THOMAS Car Construction Patent |
| 1921 DONALDSON Concrete Ship Construction Patent |
| 1921 FLUDE Construction Of Saddletrees Patent |
| 1921 CURTISS Airplane Wing Construction Patent |
| 1921 GROVER ALBERT Banjo Construction Patent |
| 1921 HILLS Pivot Bearing Construction Patent |
| 1921 CURTISS Airplane Construction Patent Print |
| 1921 ADOLF Construction Toy Set Patent Print Art |
| 1921 KRAMER Vehicle Tank Construction Patent |
| 1921 STEVENSON Stall Construction Patent Print |
| 1921 KRAMER ANDREW Tank Construction Patent |
| 1921 LAVAGETTO Wooden Ship Construction Patent |
| 1921 WILLARD Aeroplane Construction Patent Print |
| 1921 EICKHOFF Magazine Construction Patent Print |
| 1921 LITTLE Ship Construction Patent Print Art |
| 1921 EDMANDS Grand Piano Construction Patent |
| 1921 MYERS Sectional Door Construction Patent |
| 1921 IOWA GATE COMPANY Stall Construction Patent |
| 1921 LAMONT Car Truck Construction Patent Print |
| 1921 FLOYD Side Frame Construction Patent Print |
| 1921 SMITH GEORGE Ship Construction Patent Print |
| 1921 COTTON Passenger Car Construction Patent |
| 1921 LAMONT JOHN Truck Construction Patent Print |
| 1921 KRAMER Wagon Tank Construction Patent Print |
| 1921 FOSTER Construction Of Ships Patent Print |
| 1921 SMITH Ship Construction Patent Print Art |
| 1921 BELZ Toy Of Knockdown Construction Patent |