Senate Chamber State Of New York Cover

OK, I know this poor cover is ratty but I bought it anyway. I am very curious about this fellow that it was addressed to and would like to know more about him. This is, of course, the sellers image.

Saunders, Geo P, b. 04 Mar 1828 Norwalk, CT, d. 1 May 1908 Dunkirk, NY
Married Julia S Rawson
Daughter Maude
Co-owner of the the firm "Colman & Saunders," a produce and milling business.
I don't much else out there on him, perhaps someone else can find more.

A few more pieces of information on George P. Saunders:

According to this 1880 Census report, he had wife and five children (4 girls and 1 boy):



As noted above, he was a merchant in the flour trade, as partner in the firm Colman & Saunders of Dunkirk, NY. Here's an example of the billhead from the firm:



His obituary from 1908 shows that he died leaving three children, and that he was previously a Director of the Lake Shore National Bank and Trustee of the Forest Hills Cemetery:

He died 7 days before my Great Grandfather was born. Thank you VERY VERY MUCH. I am going to poke around on ancestry.com for him tonight. I'll post anything I find.

I did find a muster roll from the Civil War:
1 pressing question however? How did he serve 3 years but discharged 3 months later?? Enlisted in June 17, '61 and discharged Discharged Oct. 26, '61. according to the documentation? Clerical error I suppose could be the problem?