| 1961 THIRLAWAY Collapsible Caravans Patent Print |
| 1961 TRIECHMAN Collapsible Boat Anchor Patent |
| 1961 LEON PRZYBYLSKI Collapsible Boat Patent |
| 1961 ALBERT Collapsible Game Apparatus Patent |
| 1961 LIBBY Collapsible Baby Carriage Patent |
| 1961 PLETT ABRAHAM Collapsible Trailer Patent |
| 1961 LEWIS Collapsible Convertible Boat Patent 19365 |
| 1961 MARTIN Collapsible House Motor Vehicles Art |
| 1961 CHARLES O H GRIMES Collapsible Cart Patent |
| 1961 LEON Collapsible Boat Art |
| 1961 KUMMETH MFG CO Collapsible Stroller Patent |
| 1961 KUMMETH Collapsible Stroller Patent Print |
| 1961 HENRY Collapsible Boats Their Production |
| 1961 VERNON Collapsible Road Vehicle Patent |
| 1961 SCHULER Collapsible Pontoon Type Boat |
| 1961 SYKES WILLIAM Collapsible Cart Patent Print |
| 1961 MARTIN Shopping Cart With Collapsible Seat |
| 1961 SORRELL Collapsible Motor Vehicle Patent |
| 1961 OKEY Boat Trailer Collapsible Shelter Construction |
| 1961 GAREHIME Collapsible Water Cycle Patent |