What year did Hallmark made its first Christmas cards?

More Questions:

Whose 502-foot Fenway Park homer is marked by a single red seat in the right field bleachers?

What's the highest-pitched instrument in the orchestra?

What cave found in New Mexico, is the deepest cave in the continental US?

In which South American country is the Atacama desert?

What group wrote the 1979 hit single "In the Navy"?

Who played Willis on the sitcom "Diff'rent Strokes"?

In "Snow White and the Seven Dwarfs', which dwarf's job is it to check the authenticity of the gems they mine?

What actress shaved her head for her role in the movie "Tank Girl"?

In 1947, what pilot first broke the supersonic barrier?

What "trail" did thousands of pioneers follow to Oregon during the 1800s?

The Kelvin scale is used to measure what?

The number 20 is the basis for which numeral system?

Which two demons aid Satan in Milton's "Paradise Lost"?

Chablis wine comes from which French wine region?

The William J. Clinton Presidential Library is located in which US capital?