The Boy's Book of Crystal Sets

I.S.B.N. 900162 03 1 © First Published --March, 1954 Second Impression--June, 1954 Third Impression--April. 1955 Fourth Impression--January 1956 Fifth Impression--February, 1957 Sixth Impression--August, 1957 Seventh Impression--March, 1959 Eighth Impression--October, 1959 Ninth Impression--April, 1959 Tenth Impression--December. 1959 Eleventh Impression--April, 1960 Twelfth Impression--October, 1960 Thirteenth Impression--March. 1961 Fourteenth Impression--August, 1961 Fifteenth Impression--January, 1962 Sixteenth Impression--November 1962 Seventeenth Impression--August, 1963 Eighteenth Impreselo--September 1964 Nineteenth Impression--September, 1965 Twentieth Impression--September, 1966 Twenty-first Impression--June, 1970 Twenty-second Impression~February, 1972 Twenty-third Impression-September 1972 Twenty-fourth Impression-May 1973 Twenty-fifth Impression - May 1974 Twenty-sixth impression - August 1975 Crystal set 1

The sets get quite complex; here is the circuit for the last one:

Circuit diagram

Thanks to Steve Wilson for loaning me this book to scan.

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Last modified: 17 Oct 98: Created