Erected in 1924 by Industrial Workers of the World member Richard Ramo as a memorial to his three sons killed in World War One and as an appeal for world peace.
Marker reads, “This National Estate listed monument was designed and largely constructed by Richard Ramo in memory of his three sons killed in World War 1; to his adopted son, Fred, who died tragically in 1923, and later to the family dog which was ‘maliciously poisoned’. The dedication of the mausoleum was attended by several thousand people, largely pacificists, socialist, and members of the Industrial Workers of the World (I.W.W.). The temple bears several leaded marble inscriptions expressing Ramo’s bitter hatred of war and details of the deaths of his sons. One particularly pathetic inscription reads: “All my hope lies buried here.”