We are indebted to Professor Daniel P. Friedman of Indiana University, who provided pre-publication copies of editions of The little Lisper and The little Lisper too, and to Vikram Subramaniam of Indiana University for unpublished answers to the exercises in Scheme and the art of programming, for his own additional unpublished exercises and solutions, and for acting as a liaison.
This document is available on the World Wide Web as
http://www.math.grin.edu/~stone/events/scheme-workshop/acknowledgements.html