He was fascinated by new techniques in the medium – such as the systematic use of speech bubbles – found in such American comics as George McManus' Bringing up Father, George Herriman's Krazy Kat and Rudolph Dirks's Katzenjammer Kids, copies of which had been sent to him from Mexico by the paper's reporter Léon Degrelle, stationed there to report on the Cristero War.
Editor Rudolph Block asked Dirks to develop a Sunday comic based on Wilhelm Busch's cautionary tale, Max und Moritz.
Rudolph Valentino | Rudolph the Red-Nosed Reindeer | Wilma Rudolph | Rudolph Grey | Rudolph Ackermann | Rudolph the Red-Nosed Reindeer (song) | Rudolph II of Burgundy | Rudolph II | Richard Rudolph | Maya Rudolph | Rudolph Leibel | Rudolph I of Burgundy | Rudolph de Landas Berghes | Rudolph | Robert L. May (Rudolph) | Ferdinand Rudolph Hassler | Wilhelm Rudolph Fittig | Rudolph Walker | Rudolph the Red-Nosed Reindeer (TV special) | Rudolph Pariser | Rudolph Maté | Rudolph Kos | Louis Rudolph, Duke of Brunswick-Lüneburg | Kyle Rudolph | Jacques Rudolph | Charles Rudolph Walgreen | Alan Rudolph | William Rudolph | Shirley Timm-Rudolph | Run Rudolph Run |