TB 38″ EM-L W6M* rev.
From Syllmar Gardens catalog for 1960: “A cheery, crisp, ruffled flower with clear bright yellow standards and cream white falls edged in bright yellow.”
((Matula x Midwest Gem) X Y sdlg), HM 1950, AM 1954.
*Note: The 1949 Checklist codes this iris as W3M rev, but that cannot be right as it would be a blue over white reverse amoena. W6M rev would be closer.