Presentation Links
Images
- AutoDraw
- Library of Congress
- Library of Congress: Free to use/public domain
- Library of Congress: Historic American Engineering Record
- National Park Service: Heritage Documentation Programs
- National Map
- Iowa Geographic Map Server
- AIGA symbols and icons (free use)
- Unicode characters
- Amp-What (Unicode and other character search)
- ISO safety signs
- Internet Archive: Images
- Library of Congress: Classic maps
- Archive.org: Images
- Chronicling America (historic newspaper search)
- Smithsonian Open Access
Data Sources