In 1912, William still advertised himself as a lawyer. A few lines above, William’s youngest daughter, Roberta V., was listed as a cashier for H. P. Wasson & Co.
Source:
“U.S. City Directories, 1821-1989,” digital image, Ancestry.com (http://www.ancestry.com : accessed 5 May 2014), Indianapolis (1912), Wm B. Schwartz and Roberta V. Schwartz.
Genealogy Lady 
Funny…I also noticed the name Pharaoh Schwartz on the list.