1. H97.61.4 Object number: H97.61.4 Object name: magazine Title: The Open Valve Maker: Mary A. Danforth Date made: May, 1949
2. H97.61.5 Object number: H97.61.5 Object name: magazine Title: The Open Valve Maker: Mary A. Danforth Date made: July, 1949
3. H97.61.8 Object number: H97.61.8 Object name: magazine Title: The Open Valve Maker: Mary A. Danforth Date made: October-November, 1951
4. H97.61.10 Object number: H97.61.10 Object name: magazine Title: The Open Valve Maker: Mary A. Danforth Date made: June 1952
