Pneumatic tower foundations of the East River suspension bridge [microform] /
Roebling, Washington Augustus,1837-1926.
New York : Averell & Peckett, printers,
1873.
"The following pages comprise chiefly the annual reports on the progress of the East River suspension bridge, from 1869 to 1872."--Pref.
Sabin 72578.
Sabin Unit 129.
Microfiche.
Caissons.