It was not until after they stopped making the shorts in December 1957 that Moe learned of Cohn's tactics, what a valuable commodity the Stooges had been for the studio, and how many millions more the act could have earned. Columbia offered theater owners an entire program of two-reel comedies (15–25 titles annually) featuring such stars as Buster Keaton, Andy Clyde, Charley Chase and Hugh Herbert, but the Stooge shorts were the most popular of all. The Stooges' release schedule was eight short subjects per year, filmed within a 40-week period; for the remaining 12 weeks, they were free to pursue other employment, time that was either spent with their families or touring the country with their live act. The Stooges appeared in 190 film shorts and five features while at Columbia, outlasting every one of their contemporaries employed in the short-film genre. Del Lord directed more than three dozen Stooge films, Jules White directed dozens more and his brother Jack White directed several under the pseudonym "Preston Black". Silent-comedy star Charley Chase also shared directorial responsibilities with Lord and White. The Stooge films made between 1935 and 1941 captured the team at their peak, according to film historians Ted Okuda and Edward Watz, authors of The Columbia Comedy Shorts. Nearly every film produced became a classic in its own right. Hoi Polloi (1935) adapted the premise of Pygmalion, with a stuffy professor making a bet that he can transform the uncultured trio into refined gentlemen; the plotline worked so well that it was reused twice, as Half-Wits Holiday (1947) and Pies and Guys (1958). Three Little Beers (1935) featured the Stooges running amok on a golf course to win prize money. Disorder in the Court (1936) features the team as star witnesses in a murder trial. Violent is the Word for Curly (1938) was a quality Chase-directed short that featured the musical interlude "Swingin' the Alphabet". In A Plumbing We Will Go (1940)—one of the team's quintessential comedies—the Stooges are cast as plumbers who nearly destroy a socialite's mansion, causing water to exit every appliance in the home, including an early television set. This was remade twice, as Vagabond Loafers and Scheming Schemers. Other entries of the era are considered among the team's finest work, including Uncivil Warriors (1935), A Pain in the Pullman and False Alarms (both 1936), Grips, Grunts and Groans, The Sitter Downers, Dizzy Doctors (all