View Original: | Composite Lock vs regular Lock on Chesapeake and Ohio Canal.jpg (1548x826) | |||
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Keywords: Composite Lock vs regular Lock on Chesapeake and Ohio Canal.jpg en Difference in stonework between a composite lock L and normal lock R Composite lock is Lock 71 regular lock is lock 33 This is a montage of the photos PD image Lock_71_on_Chesapeake_and_Ohio_Canal_from_HABS png and image Masons_marks_on_C_and_O_Canal_Lock_masonry_from_HABS tif own Montage from 2 photos PD Bonnachoven 2014-01-13 Chesapeake Ohio Canal National Historical Park Cc-zero |