Source
https://www.nps.gov/oia/Test/Introduction_Questions.htm (via Wayback Machine)
Puzzle Challenge screenshots
Puzzle Challenge
| Rating: | [0 / 5 - 0 Votes] |
| Tags: | Educational , Geography , Mouse-only , Quiz |
| Publishers: | National Park Service |
| Language: | English |
| Play Mode: | Single Player |
| Library: | Flash Games |