Movable Bridges
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Depicts the history and development of the movable bridge and shows how one of the largest of all movable bridges was built at Houghton, Michigan.
Related films
Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record
- Educational film guide. Supplements (1959-62) — title, year, creator, length, format, color, sound, description, catalog record
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