Another, more discreet, name for LSD that comes on a blotter/tab.
Gravely lawn tractors sorted by year. The Gravely Motor Plow Company was founded in 1916 in Dunbar, West Virginia building a successful line of two-wheel walking tractors. The company later moved to Charleston, North Carolina and, in 1964, Gravely entered the four-wheel garden tractor market. Gravelys used a unique rear-engine design on their tractors. Ariens purchased Gravely in 1982, and still owns the brand.
In the United States, the first gasoline powered mowers were manufactured in 1919 by Colonel Edwin George (you had to guess that it would take a military man to get some real power behind those whirling blades). However, before the Second World War the power mower was little used in most neighborhoods.