Put Wedges to the Test

[William Wheeler Hubbell, authorized to apply for patents.]

United States. Congress. Senate. Committee on Patents

1858

Kokuritsu Kokkai Toshokan shozō Meijiki kankō tosho maikuro-ban shūsei

Kokuritsu Kokkai Toshokan (Japan)

1991

Leonardo

Leonardo da Vinci

1946

Player Piano

Kurt Vonnegut

1952

The economy of machinery and manufactures

Charles Babbage

1832

[Gasoline motor-boat for customs service at Corpus Christi, Texas.]

United States. Congress. House. Committee on Appropriations

1876

Mike Mulligan and His Steam Shovel

Virginia Lee Burton

1939

The White Mountains (The Tripods #1)

Sam Youd

1967