Edwin married Olivia Denham Cooper on 6 Sep 1892 in Denver, Colorado, USA. Olivia (daughter of Job Adams Cooper and Jane Olivia Barnes) was born on 4 Aug 1868 in Illinois, USA; died on 1 Nov 1930 in Denver, Denver, Colorado, USA; was buried in Fairmount Cemetery, Denver, Denver, Colorado, USA. [Group Sheet] [Family Chart]

1. Ruth H. Kassler was born on 21 Jul 1893 in Denver, Colorado, USA; died on 8 Nov 1960; was buried in Fairmount Cemetery, Denver, Denver, Colorado, USA.
2. Edwin Stebbins Kassler, Jr. was born on 12 Sep 1895 in Colorado, USA; died on 11 Jan 1973 in Denver, Denver, Colorado, USA.
3. Genevieve Kassler was born on 22 Mar 1905 in Colorado, USA; died on 7 Jul 1986 in Denver, Colorado, USA; was buried in Denver, Denver, Colorado, USA.