Dr. Mae Jemison, the first African-American woman in space, was inspired to try out for NASA by Nichelle Nichols, who portrayed communications officer Uhura on the original “Star Trek.” In tribute to Nichols, Dr. Jemison began each of the work shifts on her 1990 shuttle flight with the words “hailing frequencies open.”

Where are you most likely to find something or someone called a “limitation page”?

A) In a Congressional office

B) In a legal contract

C) In a collectible book

D) In an architect’s portfolio

Monday’s answer: Construction of the Washington Monument took 36 years (1848-1884), about three times longer than the Lincoln Memorial (eight years), Jefferson Memorial (four years) and Vietnam Veterans Memorial (eight months) combined.