A practical treatise on foundations, explaining fully the principles involved : with descriptions of all of the most recent structures, accompanied by numerous drawings ... (1893)
Patton, William Macfarland, 1845-1905 · New York : John Wiley · leaf 463
Plate XIV, … ELEVAT10.M OF OCTAGONAL CAISSON ^Timber- in Caisson 211,289 Ft.B.M, Scale 2 feet. Fig. i. Part Elevation, Part Longitudinal Section, showing Interior Details, Shafts, Pipes, in Position.
Foundations
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
