Analysis of information sources in references of the Wikipedia article "Vaudeville" in English language version.
... the widespread influence Dutch minstrels and comedians had with their musical and dramaturgical idiom on vaudeville, the circuit of traveling tent shows. ... The Black Crook of 1866 ... already displayed a mixture of "ersatz German romanticism" (Gerald Bordman) and burlesque elements inherited from the Dutch character shows ...
... it is in the form of the variety show itself, network radio's offspring, that we can see the influence of vaudeville on radio most clearly. From The Rudy Vallee Show through Jack Benny and Bing Crosby to TV programs like The Ed Sullivan Show, The Smothers Brothers, Saturday Night Live, In Living Color, and Late Night with David Letterman, we can see strong remnants of vaudeville's typical variety act structure. Combining a host/announcer with comedy sketches, musical performances, dance, monologues, and satiric banter—sometimes even animal acts--the variety show takes myriad forms today. The vaudeville circuit of touring companies and local theatres is gone, but it lives on electronically.