County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.15, Nov., 1856.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.16, Dec., 1856.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.17, Jan., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.18, Feb., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. This sheet is slightly water damaged. Estimate no.19. This is slightly water damaged. This does not affect the text, Mar., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.20, Apr., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.21

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.21, May, 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. This sheet is quite water damaged. Text is slightly affected. Estimate no.22, June, 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. This sheet is very water damaged and mouldy. This does affect the text. Estimate no. 23, July 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.24, Aug., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.25, Sept., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.26, Oct., 1857.

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland estimate of work done on the main drain of the marsh lands by Alexander Cook, unsigned. Estimate no.27, Nov., 1857.

County of Welland final estimate of work done on the main drain of the marsh lands by Alexander Cook

County of Welland final estimate of work done on the main drain of the marsh lands by Alexander Cook complete with notes and calculations of quantities. This document is unsigned. Estimate no.28, Dec., 1857.

Letter to Samuel Keefer, engineer on the Welland Canal from Charles H. French

Letter to Samuel Keefer, engineer on the Welland Canal from Charles H. French. He says that he has no extra bills for work on his contract, Sept. 12, 1848.