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Creator
- American Bridge Division USS Steel 7
- Bailey, Van Evera 1
- Bain, William J. Jr. 1
- Balzhiser, James K. 2
- Bartholomew, Lyle P. 7
- Bear, Wyman K. 5
- Belluschi, Pietro 75
- Bessonette & Graff 1
- Bessonette, Marshall 1
- Bond, Lloyd M. 12
- Boyle, William F. Jr. 27
- Brookman, Herman S. 80
- Brown, James D. 27
- Bumgardner, Albert O. 1
- Bureau of Reclamation 27
- Burns, Bear, McNeil & Schneider (Portland, Or.) 5
- Burns, Thomas B. 5
- Byers, Donovan C. 3
- Byther, Harry S. 27
- Caine, Morton 1