This is an old post, you may have this info by now.
Imperial Valley Press, 9/7/1907 ad Pool Hall Bank Block A nice, quiet place to spend your leisure hour. Soft drinks, lemonade, cigars, tobacco I. E. Casner, Prop.
In 1907 he was also a barber.
1/22/1910 Katherine E. and I. E. Casner to Millard Casner, El Centro, sale of lots.
12/12/1908 abstracted arrested for gambling- Ike Casner
1/8/1910 Millard Casner & family has arrived here from Texas and will make El Centro their future home. Mr. Casner is a brother of Ike and Albert Casner, and will probably engage in the cotton business as he is an experienced cotton man.
California, Voter Registers, 1866-1898 about Isaac Elihu Casner Name: Isaac Elihu Casner Residence Year: 1894 Residence Place: San Bernardino, California Age: 22 Birth Year: abt 1872