Quoted from Harry Johnson's catalogs:

    1956 p. 35: “Spineless when mature. Huge white flowers.”
    1957 p. 33; 1958 p. 34: “Giant.”
    1959 p. 28; 1960 p 34: “Giant, spineless”
    1961 p. 34; 1962 p. 34: “Giant, almost spineless variety.”
    1966 p. 19; 1967 p. 19: “Few spines”