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Creator
- Clark & Walcott14
- Mauran, Russell & Crowell10
- Kahn, Albert7
- Coolidge & Hodgdon5
- Geological Survey (U.S.)5
- Osborn Engineering Co.5
- Renshawe, John H.5
- Shaw, Howard Van Doren5
- Hoggson Brothers4
- Montgomery, Pauline4
- Schenck & Williams4
- Alschuler, Alfred S.3
- Brooks, Bramhall & Dague3
- Granger, Lowe, & Bollenbacher3
- Hawkins, Geo. T. (George T.)3
- John Mead Howell & Raymond M. Hood3
- McKinney, R. C. (Robert C.)3
- Rubush & Hunter3
- Swartwout, Egerton3
- Davis, Dunlap & Barley2