Lothar Baumgarten Soo Line Railroad, Swing Bridge III, Mississippi River, Sabula, Jackson County, Iowa 1989
Lothar Baumgarten Southern Pacific Transportation Co.; Kansas River, Topeka, Shawnee County, Kansas 1989
Lothar Baumgarten St. Louis-San Francisco Railway, Memphis Bridge. Chicago, Rock Island & Pacific... 1989
Lothar Baumgarten Three Rolling Bascule Bridges, Chicago Sanitary & Ship Canal, Chicago, Illinois 1989
Lothar Baumgarten Union Pacific Railroad. Long Beach Harbor, Los Angeles County, Yuma County, California 1989