Category talk:Canals on the National Register of Historic Places in Maryland
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Categories:
- Category-Class Maryland articles
- NA-importance Maryland articles
- WikiProject Maryland articles
- Category-Class Transport articles
- NA-importance Transport articles
- Category-Class maritime transport task force articles
- NA-importance maritime transport task force articles
- Maritime transport task force articles
- WikiProject Transport articles
- Category-Class National Register of Historic Places articles
- NA-importance National Register of Historic Places articles
- Category-Class National Register of Historic Places articles of NA-importance