Ken,
I should of added the following information. Before the Civil War,a man named Mr Perry owned a store and a Gov.Commissary,he did very well for himself and family but later died and is buried in a family plot not 200 yards from this store.Mr Chunn bought this store after he died.(note this is where the first P.O, Est Sept.17,1857 Gary E Scales-Toboxky)
later-- about the "Old Perry Store"
pg Vol 4 Pg184
The evidenice all go to show that the Post office was in the 'old Perry business house and that was continued in the building after Mr Fisher took charge,there is no doubt the same building in which Wn Chunn conducted a genernal business for many years, until the Kay Railroad build through and the town of McAlester was Est.
Mr Chunn closed this business in 1875 moved to his ranch.
These look like the same place- misc-sounds-spelling ----Toboxky----Tobaksi---Buckluxy
Post Offices
Gary Scales, Sept 17,1857 Toboxky
William Davis Dec 8,1868 Scalesville Buckluxy
William Davis (Late Scalesville-March 1,1870 Buckluxy

It looks like after reading O.H.S. that this old store was the site of the post office to the end of this town, when the railroad got started in 1870's and that the end of this town,as all people moved on and away.