State of Maryland, state highway system and connections [cartographic material] : 1973 / prepared by the Department of Transportation, State Highway Administration.
- Relief shown by spot heights. Copyright "1973 S.H.A." On recto: index, text, "Point of interest" chart, "Forests and parks" and Mileage diagram. On verso: ill., 13 ancillary maps and "Baltimore harbor tunnel restrictions" map.
- Maryland Dept. of Transportation
- Held by
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