Many people can remember the 1920's, but it takes a remarkable skill to recreate those far-off days for readers who were born too late to experience them. Professor Spencer-Brown, whose classic works "Laws of Form" and "Only Two can play This Game" were both best-selling Bantam paperbacks, is perhaps the only writer who can bring to life the secret loves, fantasies, and frustrations of a two-year-old who recalls 1925 as if it were only yesterday.