Louisiana Purchase Mystery Cache

The cache is located along the east side of the Feather River. Park at the yellow gate, and hike a little more than a mile along the river...after solving the puzzle below.

1. Fort ______ was constructed in Illinois in 1816.

2. The ________ of 1806 explored the Arkansas River watershed (2nd letter)

3. year of Thomas Jefferson's birth (last two digits)

4. approximate cost per acre (double)

5. year of purchase (add digits together)

6. west of the __________ mountains

7. year that the Second Seminole War began (last two digits)

8. number of Canadian Provinces involved (-2)

9. stamp commemorating 150th anniversary of signing (last digit)

10. the Red River ________ of 1806 (+1)

11. Louisiana had been under Spanish ______ for forty years

12. _______ Adams claimed the sale was invalid.