i am looking for a story about an engineer who on his death is taken by aliens and placed on a world set at the tech level of about 1800. he became a successfull building designer including building a large bridge for the town. the aliens had an active if hidden role in that everyone there was brought by them and their minds altered so they would perform their roles. the engineer encountered his old boss who was a very bitter woman but who did not remember her past. she is given to him as a wife along with one other girl. he also ends up part owner of a brothel. i have no idea who wrote this or even if it was posted on sol.