Calculations regarding the bridge crossing Chippawa

Calculations regarding the bridge crossing Chippawa (1 page, penciled calculations), n.d.

Calculations on a piece of “Long Point, Head Quarters” stationary with the “Long Point Company, Canada” seal

Calculations on a piece of “Long Point, Head Quarters” stationary with the “Long Point Company, Canada” seal. There are land calculations on this sheet, n.d.

Chart of calculations regarding quarrying, cutting, transportation and cement

Chart of calculations regarding quarrying, cutting, transportation and cement, n.d.

Note with calculations regarding payments for gas and other items

Note (1 page, handwritten) with calculations regarding payments for gas and other items.