Sixty-Seventh Annual Session the National Baptist Convention U.S.A. Inc. Municipal Auditorium, Kansas City, Mo., September 9-14, 1947. Photographer: Anderson, KC. Mason wrote on the image, indicating where he and his wife Pina stood in the large group.

The other photograph is of the NAACP emergeycy conference, June 3-6, 1943. Mason and his granddaughter both indicated where he is located in the photograph; there's also an indicator for "Young Roy Wilkins." Photographer: Spencer & Wyckoff.