The Wonders of America Superlative Series includes Steamboat, the tallest active one of these
a geyser
Based on a concept agreed to at the 1919 Paris Peace Conference, this intl. association was formed to maintain world peace
The League of Nations
Just scoop ice cream on root beer for this type of beverage
Float
Typically found at the end of a book, it's an alphabetical listing of items in the book, with page numbers
Index
90 degrees is the highest temperature ever recorded in this state capital
Juneau
The Historic Preservation stamps of the 1970s included Decatur House in Washington, D.C. & a cable car in this city
San Francisco
In 1899 in his mid-20s, Winston Churchill was captured & imprisoned during this war, escaping a short time later
The Boer War
Serling or Steiger
Rod
This Texas-based company has been making its iconic plastic ice chests since the 1960s
Igloo
The Deccan this forms most of the southern peninsula of India
a plateau
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)
In August 1947 these 2 Asian nations gained independence from Great Britain
Pakistan and India
Per the OED, "a well-known conjecture is that" this friendly word "was a familiar abbreviation of chamber-fellow"
Chum
Last name of Max, son of a famous actor father & famous actress mother, Sinéad Cusack
Irons
Traditionally, a bride kept this collection of items that she was bringing into her marriage in a cedar hope chest
trousseau
A 1996 stamp celebrating the 150th anniversary of Iowa's statehood was based on this native son's "Young Corn" painting
Grant Wood
Succeeding his grandfather Maximilian in 1519, Charles I of Spain ascended to this more lofty imperial title as Charles V
Holy Roman Emperor
This baseball pitch gets batters to hit a lot of ground balls
a sinker
William Butler Yeats got nationalistic as he urged these "Poets, learn your trade, sing whatever is well made"
Irish
Inspired by a palace in France, Ben & Bernice Novack built this iconic Miami hotel
Fountainbleau
Inspired by its official bird, the scissor-tailed flycatcher, this state's Skydance Bridge spanned a stamp in 2023
Oklahoma
While searching for treasure, this explorer & conquistador became the first European to document the Mississippi River
In computing, it's an acronym for a transfer of data to a temporary storage area
Spool(ing)
In "Doctor Faustus" Christopher Marlowe uses this name for Troy
Illium
At the beginning of "The Invisible Man", the stranger, walking from a railway station, was carrying a black one of these
a portmanteau