to be braced and tied to each other, as shown in the plan. The tie
pieces are to be of selected squared lumber, 4 inches by 6 inches in
cross section. The roof is to be framed and braced in the ordinary
manner, and this framing is to extend beyond the outer wall 6 feet. The
covering is to be a good quality of corrugated iron roofing, securely
fastened to the framework, and painted with three good coats of the best
quality of roof paint. The whole to be constructed and executed, in the
best and most workmanlike manner, of good materials throughout, and to
be of a strength sufficient to withstand the windstorms to which it may
be subjected.

III. PLANS AND SECTIONS--PRESERVATION OF THE CASA GRANDE RUIN, ARIZONA.
SCALE OF ALL THE PLANS AND SECTIONS. 0.1 INCH = 1 FOOT

Plans and sections accompanying specifications are as follows:

Plan showing tie-rods, limits of work, and lines of ground sections.
[Plate CXVII of this report.]

Three east-and-west sections to show estimated amount of excavation
necessary. [Plate CXVIII of this report.]

Three north-and-south sections to show estimated amount of excavation
necessary. [Plate CXIX of this report.]

Plan showing roof support. [Plate CXXII of this report.]

Two sections showing roof support. [Plate CXXIII and plate CXXIV of
this report.]

IV. OATH OF DISINTERESTEDNESS

I do solemnly swear that the copy of contract hereunto annexed is
an exact copy of contract made by me personally with Theodore Louis
Stouffer and Frederick Emerson White; that I made the same fairly,
without any benefit or advantage to myself, or allowing any such
benefit or advantage corruptly to the said Theodore Louis Stouffer
and Frederick Emerson White, or to any other person or persons; and
that the papers accompanying include all those relating to the said
contract, as required by the statute, in such case made and provided.

(Signed) Cosmos Mindeleff.

Sworn to and subscribed before me at Washington, D.C., this 18th day
of July, 1891.

[SEAL] (Signed) Jno. D. McChesney,
_Notary Public_.

V. BIDS

I

Bid for repairs on the Casa Grande ruins, in Pinal County,
Arizona, bidders to furnish all labor and materials according to
specifications:

Item No. 1. Cleaning out debris, 60 cents per cubic yard.
Item No. 2. Underpinning walls, $1 per cubic foot.
Item No. 3. Filling in o