Accompanying a two page, mostly illegible letter from Thomas Ewing letter press book dated Leavenworth, July 14, 1857, was a two page addendum describing and itemizing the cost of building 40 new and reconstructing the roofs on 27 previously built houses in Leavenworth--total cost, $8,990. He also provided an estimate as to rent that could be expected on these properties and on "a two story brick building, such as you spoke of building on the corner of 4 & Delaware."