From sleeve: Overhead view of scale model freight car truck on tangent track. Possibly patent model of experimental truck. source: David M. Novak, Baltimore Streetcar Museum, Inc.
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The Photography Collections, University of Maryland, Baltimore County
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This item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please see http://aok.lib.umbc.edu/specoll/repro.php or contact Special Collections at speccoll(at)umbc.edu.