The Okanagan Senior League ceased its operations after the 1960 - 61 season .
In 1951 the Okanagan Mainline League split up into two leagues : the Pacific Coast Senior League and the Okanagan Senior League .
The Okanagan Senior League ceased Okanagan Senior League 's operations after the 1960 - 61 season .
In 1951 the Okanagan Mainline League split up into two leagues : the Pacific Coast Senior League and the Okanagan Senior League .