Who needs four years of costly undergraduate education in History (sorry Mom & Dad) when you can just consult John B. Sparks' "Histomap" of 1931. Writing in Slate's "The Vault" blog, Rebecca Onion looks at the 5-foot-long guide to world history.
"This 'Histomap,' created by John B. Sparks, was first printed by Rand McNally in 1931," notes Onion. "This giant, ambitious chart fit neatly with a trend in nonfiction book publishing of the 1920s and 1930s: the 'outline,' in which large subjects (the history of the world! every school of philosophy! all of modern physics!) were distilled into a form comprehensible to the most uneducated layman."