Monday, July 13, 2026 · america_250

America 250 · July 13 — sources and surges

5 questions · 1000 points possible. Below are the prompts, hints, and target locations from this pack.

A river source, a continental statute, a city in flame, a blackout, and a benefit concert — five things that happened on July 13 over two centuries.

Practice this pack

01
Drop a pin on the lake identified as the headwaters of the Mississippi River by Henry Schoolcraft on July 13, 1832.
● Main Park Drive — Minnesota, United States
Did you know?
Schoolcraft coined the name from Latin 'veritas caput' (true head). The river flows 2,340 miles from this lake to the Gulf of Mexico.
Target
47.2436°, -95.2057°
Cap
932 mi
Weight
200 pts
02
Drop a pin on the New York City building where the Continental Congress passed the Northwest Ordinance on July 13, 1787.
● Nassau Street — New York, New York, United States
Did you know?
The ordinance organized the Northwest Territory (today's Ohio, Indiana, Illinois, Michigan, Wisconsin) and banned slavery there — the first major federal action against slavery.
Target
40.7074°, -74.0107°
Cap
932 mi
Weight
200 pts
03
Drop a pin on the Philadelphia stadium that hosted the U.S. half of Live Aid on July 13, 1985 — a televised benefit watched by 1.5 billion people.
● North Access Road — Philadelphia, Pennsylvania, United States
Did you know?
Phil Collins played both Wembley and JFK the same day, flying between sets via Concorde. Madonna, Queen (London), U2, Mick Jagger, and Tina Turner all performed.
Target
39.9019°, -75.1710°
Cap
932 mi
Weight
200 pts
04
Drop a pin on the test site where the U.S. exploded over 900 nuclear devices between 1951 and 1992 — some visible from Las Vegas.
● Nevada, United States
Did you know?
100 of the tests were above-ground. The mushroom clouds drew tourists to Las Vegas; the Atomic Energy Commission encouraged it as long as winds blew away from the city.
Target
37.1163°, -116.0541°
Cap
932 mi
Weight
200 pts
05
Drop a pin on the valley where Mount Katmai erupted in June 1912 — the largest U.S. volcanic eruption of the 20th century.
● Kodiak Island Borough — Alaska, United States
Did you know?
The eruption sent 30 times more ash than Mount St. Helens. President Wilson set the valley aside as a national monument in 1918; it became a park in 1980.
Target
58.2620°, -154.9700°
Cap
932 mi
Weight
200 pts

America 250 · July 13 — sources and surges

Drop a pin on the lake identified as the headwaters of the Mississippi River by Henry Schoolcraft on July 13, 1832.

Drop a pin on the New York City building where the Continental Congress passed the Northwest Ordinance on July 13, 1787.

Drop a pin on the Philadelphia stadium that hosted the U.S. half of Live Aid on July 13, 1985 — a televised benefit watched by 1.5 billion people.

Drop a pin on the test site where the U.S. exploded over 900 nuclear devices between 1951 and 1992 — some visible from Las Vegas.

Drop a pin on the valley where Mount Katmai erupted in June 1912 — the largest U.S. volcanic eruption of the 20th century.