problems, others to family problems; Pournelle wrote that Piper felt burdened by financial hardships in the wake of a divorce, and the mistaken perception that his career was foundering (his agent had died without notifying him of multiple sales). Editor George H. Scithers, who knew Piper socially, has stated that Piper wanted to spite the ex-wife he despised: by killing himself, Piper voided his life insurance policy, and prevented her from collecting. An unpublished story, "Only the Arquebus", was missing after his suicide; it is probable that he destroyed it along with many of his personal papers. His output was eventually purchased by Ace Science Fiction and reprinted in a set of paperbacks in the early 1980s. Many of these have since gone out of print, though his two best-known arcs were again reprinted by Ace in 1998 and 2001. Late in his career, Piper corresponded with Pournelle, who was the Ace editor who helped reprint some of his novels. Many of his earlier copyrights have been allowed to lapse, permitting Project Gutenberg to distribute his work online. Themes and hallmarks Piper's stories fall into two groups: stark space opera, such as Space Viking, or stories of cultural conflict or misunderstanding, such as Little Fuzzy or the Paratime stories. A running theme in his work is that history repeats itself; past events will have direct and clear analogues in the future. The novel Uller Uprising is the clearest example of this, being based on the Sepoy Mutiny. A similar example is the very title of Space Viking, although the novel is not a direct reinterpretation of a specific historical precedent. A later theme in the book involves the takeover of a planet in a manner reminiscent of the rise of Adolf Hitler. Piper's characterization was rooted in the notion of the self-reliant man, able to take care of himself and both willing and able to tackle any situation that might arise. This is exemplified in a bit of dialogue in his short story "Oomphel in the Sky" (1960): He actually knows what has to be done and how to do it, and he's going right ahead and doing it, without holding a dozen conferences and round-table discussions and giving everybody a fair and equal chance to foul things up for him. As a result, his stories tend towards the heroic, and the conflict is usually driven externally. Piper was interested