In which a space detective learns that hundreds of Richard Nixon's tiny gifts to the world have gone missing over the years, and John wonders if religious sacraments are more effective in space. Certificate #25614.

In which the counterculture of the 1960s encourages powerful institutions to create a square but multiracial song-and-dance troupe that takes the world by storm, and Ken imagines President Eisenhower as a stern ad executive. Certificate #53773

In which half a million colonists decide the American Revolution isn't really their thing, and John needs to know how many lanterns there were, just in case. Certificate #13747.

In which a medieval legend about a chunk of sandstone means that Scottish cooperation is necessary for Charles III to be crowned king, and Ken passes a Bible quiz. Certificate #42504.

In which the history of papal transportation is traced from sedan chairs to Hyundai sedans, and John has been researching the care and upkeep of Catholic moms. Certificate #15163.

In which cities, over the centuries, gradually discover the most efficient way to collect garbage for disposal, and Ken hasn't looked in his pocket since Christmas. Certificate #28712.

In which a computer millionaire takes early retirement to self-publish a 50-pound reference work about the chemistry of food, and John discovers a surprise cherry tomato. Certificate #24537.

In which one eventful Dutch voyage to Indonesia leads to a mutiny, a shipwreck, and a massacre off the coast of Australia, and Ken claims he has a bed in a port somewhere. Certificate #20229.

In which two Depression-era "drugstore cowboys" let their Wild West outlaw fantasies lead them into a life of crime, and John breaks the news to Ken about pirates. Certificate #26056.

In which the "Dragon's Jaw" across the Song Ma River in North Vietnam proves a challenge for the most advanced air weaponry on earth, and Ken thinks teens should be in parking lots. Certificate #22691.