Serve up an ace as a gift giver! With a high level degree of difficulty, this high quality puzzle is a great gift for tennis fans. It is made with different colored woods, and the 21 fun tennis related puzzle pieces are cut to one quarter inch thickness. The challenge is to make sure that none of the pieces are called "out!" when you're done. 

Within the National Archives holdings are numerous records related to sports. Many American presidents have emphasized the importance of living an active lifestyle, among them Herbert Hoover, for whom the game “Hoover-ball” was invented.

The game is a combination of tennis, volleyball, and medicine ball. It was invented by White House physician Adm. Joel T. Boone to keep the president  physically fit and was given the moniker by New York Times Magazine reporter William Atherton DuPuy for a 1931 article.

Hoover-ball was played by teams of two to four players with a six-pound medicine ball over a net eight feet high on a court similar to one used for tennis. The game was scored like tennis, and played in a similar fashion, with the server throwing the ball and the opponent catching it on the fly and immediately returning it, attempting to put it where it could not be reached and returned. The side that missed the ball or threw it out of bounds lost the point.