Postmark:
Appleton, Wisconsin, August 2, 1910, 9:30 AM
Addressed to:
Mr. & Mrs. J.W. Hackleman
Connersville
Ind.
Message:
My address is
J.C. Hackleman
Appleton,
Wis,
1009 Coll. Ave.
Let me hear from you.
The present day house at 1009 W. College Ave, Appleton, Wisconsin (Image via Google street view)
©2015 copyright owned by Deborah Sweeney
Post originally found: https://genealogylady.net/2015/03/31/lenas-postcards-24/
Genealogy Lady 
Such a surprise image in this collection. That house looks like it might be the same one.
Check out this link:
http://www.ebay.ca/itm/c1900s-C-J-ROEHR-CO-Postcard-Chicago-IL-Jewelers-Blue-Ground-South-Africa/381240688905?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140620075055%26meid%3D0799bdb2182040a8a6ad95251c9686f6%26pid%3D100011%26rk%3D3%26rkt%3D3%26sd%3D371268478347
There were other similar post cards.
I guess it was a whole series of postcards then! Huston was a jeweler so it makes sense that he would get free stuff from a diamond supplier.