1. H97.24.1 Object number: H97.24.1 Object name: radio Title: San Francisco-Oakland Bay Bridge Construction Radio Telephone System Maker: Reginald Tibbetts Date made: circa 1932-1934; circa 1932-34
2. H97.24.2 Object number: H97.24.2 Object name: radio Title: San Francisco-Oakland Bay Bridge Construction Radio Telephone System Maker: Reginald Tibbetts Date made: circa 1932-34; circa 1932-1934
3. H97.48.34 Object number: H97.48.34 Object name: transmitter-receiver Maker: D. Reginald Tibbetts Date made: 1935
4. H97.48.35 Object number: H97.48.35 Object name: transmitter-receiver Maker: D. Reginald Tibbetts Date made: 1935
