“After searching for a different mosaic method, I discovered the eggshell mosaic by accident after wiping the kitchen counter. Some eggshells were swished into the porcelain sink and sounded like glass. A lightbulb went off in my head. I completed 45 eggshell mosaics from 1958 to 1977.”

From an interview in Jazz Improv in 2002. Read the whole interview here.