Description: [caption id="" align="alignright" width="210" caption="Portrait of a City Marshal by Barr & Wright, 1870-1880, National Museum of American History, Catalog number 77.43.1678."][/caption] Help the Smithsonian ID a Houston city marshal from the 1870s in the picture on the right. The extremely flammable nitrocellulose film used before 1951 led to an estimated 80 percent of silent
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