Dear sybil7,
It was the Lee Adams and Charles Strousse's sophmore show, after the smash hit that was "Bye, Bye Birdie".
It was one of those cases where they started work on adapting one book, ended up not being able to get the rights to it and(having done all of this work on a show about a foreign professor's adventures coming to America and not wanting to scrap all of the work that they had done) got the rights to another book that had the same "set up".
(It still happens. Kander and Ebb's "Steel Pier" started out as a musical version of the book/film "They Shoot Horses Don't They." They did all of the research on the period, couoldn't get the rights to the source material and, so enthusiastic on the period, wrote their own story about a 1930's dance marathon.)
You can answer most of your flop musical questions yourself and go out and get a copy of Ken Mandelbaum's "Not Since Carrie" which will tell you all you need to know about it.
For more opinionated reporting, get a copy of Ethan Mordden's volume about the musicals of the '60's "Open A New Window".
Joshua Logan does talk about it in his second autobiography "Real People, Movie Stars, and Me". But doesn't go into his flop musical all that much.
The script is available from, I believe it's Broadway Publishing Company.
"A coherent existance after so many years of muddle" - Desiree' Armfelt, A Little Night Music
"Life keeps happening everyday, Say Yes" - 70, Girls, 70
"Life is what you do while you're waiting to die" - Zorba