Rock work for the wading pool at Columbus Park; Chicago, Illinois

Orange, green, red, black pencil on tracing papter. Location, type of plantings; notes. Unsigned. 58 cm. x 84 cm. Scale: 1"=20' [from photographic copy by Lance Burgharrdt]

Oak Park Park Commission ... Plan for wading pool. Park #3. Oak Park, Illinois.

Ink on linen; plan, sections; signed. 50x24 cm. Scale: 1"=10' [from photographic copy by Lance Burgharrdt]

The Building services engineer.

At head of title, 1969-71: I.H.V.E.

Fundamental laws of humidity with charts and tables /

Mode of access: Internet.

Transactions.

Mode of access: Internet.

1992 census of construction industries.

Mode of access: Internet.