He succeeded Edward Holmes Brown (1868-1922) as Supreme Grand Master of the FRC (Fraternitas Rosae Crucis) in 1922, and served until his death in 1966, when he was succeeded by his son Emerson Myron Clymer (1909-1983).
Valle Crucis | Ancient Mystical Order Rosae Crucis | Valle Crucis, North Carolina | Beta Crucis | Via Crucis to the Cruz del Campo | Titulus Crucis | Santa Rosae | Fraternitas Rosicruciana Antiqua | Fraternitas Rosae Crucis | Experimentum crucis | Diplocarpon rosae |
A co-founder of FUDOFSI, which recognized the FRC (Fraternitas Rosae Crucis) - rather than the AMORC (Ancient Mystical Order Rosae Crucis) - as the authentic Rosicrucian organization, Clymer tried to rekindle FUDOFSI after the death of its leader Constant Chevillon (1880-1944) during World War II.