The Ramblers was the name of a Washington DC sketch club founded in 1913 by local artists Charles H. Seaton, Winfield Scott Clime, and Edwin G. Cassedy. It soon grew to four, to include Benson Bond Moore. The Ramblers soon became the Washington Landscape Club, which evolved into the now-prestigious Washington Society of Landscape Painters.
"The motto of the Ramblers was "Nulla Dies Sine Linea," (Not a Day Without a Line) and their Log-Book describes a jolly but dedicated group of men sketching at every opportunity." (from 'Historic Plein Air Society Embraces 21st Century', by RG Ray, in American Artist, 25Mar02.)
Except for being a 'men only' club (which was an actual, explicit club rule), the Ramblers sounds like a gang to be emulated.