This 18-year-old from Louisville won the light heavyweight boxing gold medal in 1960
Muhammad Ali
The Wonders of America Superlative Series includes Steamboat, the tallest active one of these
a geyser
18th century German geologist Abraham Werner was called a neptunist because he believed all rocks originated from here
the ocean
Also a term for architectural drawing, it's the fuel-saving practice of one car closely following another
drafting
Olympic medley swimming events have these 4 strokes in one race
butterfly, breaststroke, freestyle & backstroke
The Historic Preservation stamps of the 1970s included Decatur House in Washington, D.C. & a cable car in this city
San Francisco
This word is followed by "-ification" when plants transform into a combustible solid with increased carbon content
Coal
As the lead qualifier for an auto racing event, you'll occupy this "position" in the front row at the start of the race
Pole Position
Denmark's Ellen Osiier foiled many of her opponents in 1924 to become the 1st woman to win a gold medal in this sport
fencing
This tall monument has been featured on its own stamp as well as on the Greetings from Missouri stamp
the St. Louis Arch (the Gateway Arch)
250 million years ago at the start of this period without a movie "Park", all the land masses were basically one supercontinent
Triassic
In 2010 an Enzo from this Italian company en-zoomed to 237 miles per hour
Ferrari
During the opening ceremony's parade of nations, this country traditionally goes first
Greece
A 1996 stamp celebrating the 150th anniversary of Iowa's statehood was based on this native son's "Young Corn" painting
(Grant) Wood
An attraction at Carlsbad Caverns is one of these long formations known as the Sword of Damocles
a stalactite
The Challenger SRT Demon from this Fiat Chrysler car brand was quite the speed demon in 2019, roaring at 211 miles per hour
Dodge
Reminiscent of witches, it's the bowl-like structure that holds the flame in the host stadium; Torino's was placed 190 feet up
the Olympic cauldron
Inspired by its official bird, the scissor-tailed flycatcher, this state's Skydance Bridge spanned a stamp in 2023
Oklahoma
Aeolian landforms such as dunes & ripple ridges are shaped by the action of this
wind
In 2020 Lewis Hamilton averaged 164 mph to win pole position at the Italian Grand Prix driving for this German company
Mercedes-Benz