Correspondence written from 1957-1964 primarily consists of letters written by boyFrank addressed generically to ONE. Correspondence written from 1964-1968 include letters written by and to boyFrank as an active member in ONE. Many of the letters are signed by W. Dorr Legg and most concern the ongoing dispute between W. Dorr Legg and Don Slater over leadership of ONE. The few letters written after 1968 discuss ONE's ventures after boyFrank left ONE as an active member.