Presentation Links
Academic Research
Symbols and Icons
- AutoDraw
- AIGA symbols and icons (free use)
- Unicode characters
- The Noun Project (icons)
- ISO safety signs
- Amp-What (Unicode and other character search)
Images
- Library of Congress
- Library of Congress: Free to use/public domain
- Library of Congress: Historic American Engineering Record
- Getty public domain images
- National Park Service: Heritage Documentation Programs
- National Map
- National Map viewer
- Iowa Geographic Map Server
- Internet Archive: Images
- Library of Congress: Classic maps
- Archive.org: Images
- Chronicling America (historic newspaper search)
- Smithsonian Open Access
- British Library (out of copyright)
Data Sources
- USDA aerial mapping
- Census Bureau: American Fact Finder
- Census Bureau: Community facts
- CIA World Factbook
- FRED
- Iowa Data Center
- OECD data
- PubChem (chemicals, hazards, etc.)
- World Bank
- National Historical Geography Information System
- Atlas of Historical Geography of the United States
Color codes
- ◩ Safety orange: #ff5f15
- ◩ Safety yellow: #eed202
- ◩ Safety green: #006b46
- ◩ Safety fluorescent yellow: #edff00
- ◩ Safety neon green: #99ff00
- ◩ Ivory: #fffff0
- ◩ Pearl: #fcfcf7
- ◩ Marble: #f2f8fc
- ◩ Off-white: #faf9f6
- ◩ Lavender: #f4f1f8
- ◩ Alice blue: #f0f8ff
- ◩ Parchment: #fbf5df
- ◩ Cold steel: #f8f7f4
- ◩ Eggshell: #fdfdfd