Allusions to other works
As in other novels by Vonnegut, certain characters cross over from other stories, making cameo appearances and connecting the discrete novels to a greater opus. Fictional novelist Kilgore Trout, often an important character in other Vonnegut novels, is a social commentator and a friend to Billy Pilgrim in Slaughterhouse-Five. In one case, he is the only non-optometrist at a party; therefore, he is the odd man out. He ridicules everything the Ideal American Family holds true, such as Heaven, Hell, and Sin. In Trout's opinion, people do not know if the things they do turn out to be good or bad, and if they turn out to be bad, they go to Hell, where "the burning never stops hurting." Other crossover characters are Eliot Rosewater, from God Bless You, Mr. Rosewater; Howard W. Campbell Jr., from Mother Night; and Bertram Copeland Rumfoord, relative of Winston Niles Rumfoord, from The Sirens of Titan. While Vonnegut re-uses characters, the characters are frequently rebooted and do not necessarily maintain the same biographical details from appearance to appearance. Trout in particular is palpably a different person (although with distinct, consistent character traits) in each of his appearances in Vonnegut's work.[29]
In the Twayne's United States Authors series volume on Kurt Vonnegut, about the protagonist's name, Stanley Schatt says:
By naming the unheroic hero Billy Pilgrim, Vonnegut contrasts John Bunyan's "Pilgrim's Progress" with Billy's story. As Wilfrid Sheed has pointed out, Billy's solution to the problems of the modern world is to "invent a heaven, out of 20th century materials, where Good Technology triumphs over Bad Technology. His scripture is Science Fiction, Man's last, good fantasy".[30]
Cultural and historical allusions
Slaughterhouse-Five makes numerous cultural, historical, geographical, and philosophical allusions. It tells of the bombing of Dresden in World War II, and refers to the Battle of the Bulge, the Vietnam War, and the civil rights protests in American cities during the 1960s. Billy's wife, Valencia, has a "Reagan for President!" bumper sticker on her Cadillac, referring to Ronald Reagan's failed 1968 Republican presidential nomination campaign. Another bumper sticker is mentioned, reading "Impeach Earl Warren," referencing a real-life campaign by the far-right John Birch Society.[31][32][33]
The Serenity Prayer appears twice.[34] Critic Tony Tanner suggested that it is employed to illustrate the contrast between Billy Pilgrim's and the Tralfamadorians' views of fatalism.[35] Richard Hinchcliffe contends that Billy Pilgrim could be seen at first as typifying the Protestant work ethic, but he ultimately converts to evangelicalism.[36]
Vonnegut's own experiences
In 1995 Vonnegut said that Billy Pilgrim was modeled on Edward "Joe" Crone, a thin soldier who died in Dresden. Vonnegut had told this to friends earlier, but waited until after he learned that both of Crone's parents were deceased to publicly disclose this information.[37][38]
Edgar Derby, killed for looting a teapot, was modeled on Vonnegut's fellow prisoner Mike Palaia, who was executed for plundering a jar of food (variously described as beans, fruit, or cherries).[39][40]
