Hi--I'm a Shelley descended from Phelps County, MO Shelleys.
There is a birth record for James and Henrietta showing a child birth; at the Missouri Digital Archives--free to search.
Also, Springfield, Missouri, city directories are at FamilySearch.org and you can see James and Henrietta along with their kids' names.
My grandfather, James Commodore Shelley shows up in the same city directories and was born in Jerome, Phelps County, MO. But, I can't tell if we're connected.
Catch you later,