Sandra Jean Coldren was a founding member of the Distelfink Chapter of SALI in 1991. She had a passion for stenciling and eventually created a business named Theorems by SJC.
She was a strong influence through SALI. Not only did she attend conventions, she was president of SALI in 2003. Sandra passed away on January 20, 2015 after battling cancer at the age of 59.