In Tripod Classic, use drop down menu "more searches" to select maps.
Keyword: street map philadelphia
- Title: geology of the chesapeake and delaware canal area
- Author/Creator: hyde ralph
- Author/Creator: geological survey us
- Author/Creator: new jersey geological survey
- Subject: roads pennsylvania [use the exact LC Subject Heading]
See the subject guide for maps and geography for links to current and historic maps online