The Right to Arm Bears

In the first novel (originally published in 1961) a biologist is drafted into the diplomatic corps to aid the human ambassador to Dilbia. He sends John Tardy (Half-Pint Posted) to hunt down a Dilbian, the Streamside Terror, who has kidnapped Ty Lamorc (Greasy Face), another human. While being delivered by stalwart Dilbian postman Hill Bluffer, Tardy learns more of the situation, and is attacked and eventually captured by Boy Is She Built (Streamside Terror's girlfriend) and the Hemnoid Tark-ay. Tardy gets free, and learns that things aren't quite as they seem on the planet or with the situation. As he solves the dilemma of rescuing Lamorc, he gains a victory for humanity over the Hemnoids, and a deeper insight into the Dilbians for humanity's future dealings.

Spacial Delivery is an expanded version of "The Man in the Mailbag", a novelette published in 1959 in Galaxy magazine.

In Spacepaw, a novel originally published in 1969, Bill Waltham is a terraforming specialist sent to Muddy Nose village on Dilbia to teach the natives to use basic farming tools. When he arrives, the agricultural group leader and assistant are missing. The assistant, Anita Lyme, has been kidnapped by a local group of bandits led by Bone Breaker. Hill Bluffer returns as a freelance consultant to help Bill (Pick-and-Shovel) continue the Shorty tradition of overcoming tough Dilbian customers. The outlaws are holed up in a valley, and Bill discovers, upon visiting, that Anita is a "guest". The whole story is a plan by Bone Breaker to get beaten by a human, but not lose face, so that he can retire from being an outlaw.

In the novelette "The Law-Twister Shorty" (originally published in 1971), high school student Malcolm O'Keefe is sent in to avoid a diplomatic incident as Gentle Maiden attempts to adopt some stranded human tourists. Village law allows her to do this, and Malcolm must defeat Iron Bender in order to have them released. Instead, he is able to make new laws by moving the Stone of the Mighty Grappler.