This project of the Kansas Historical Society also has documents from the Kansas State Archives. There are quite a few levels and menus. But, after you poke around a bit, I think you'll find there is a great deal of information here for people researching their ancestors and the history of this plains state.
There's information and amazing photos of significant periods in Kansas history including the "Dust Bowl days" of the great depression. You can search or browse by subject and you can even brows by time period such as the Civil War period of 1861-1865 and the Cattle Drive period from 1867 to 1885 and much more.
I think you'll finding the clock will tick away the hours once you land on this site.