Amos Urban Shirk (1890? – October 20 1956) was an American businessman, author and reader of encyclopedias.

As a businessman he worked in the food industry. He wrote Marketing Through Food Brokers, published in 1939 by McGraw-Hill. He invented a synthetic chicle and introduced vitamin capsules to grocery stores.

He was also renowned as a prodigious reader. Shirk read the entire 23-volume 1911 Encyclopædia Britannica from cover to cover in four and a half years, reading on average 3 hours per night, and taking two to six months per volume. As of 1938 he had begun reading the 14th edition, saying he found it a "big improvement" over the 11th, and saying that "most of the material had been completely rewritten".

Shirk did not limit himself to Britannica. He also read Henry Smith Williams's 24-volume Historians' History of the World, which took him two years. Among his other feats of prodigious reading were an eighteen-volume set of Dumas (read twice), a thirty-two-volume set of Balzac (twice), and a twenty-volume set of Charles Dickens (three times).

Shirk had other hobbies including painting and record collecting.

See also

• The Know-It-All: One Man's Humble Quest to Become the Smartest Person in the World

References

• "Reader", The New Yorker, March 3, 1938. pg.17