Technology

Flettner, Anton

German inventor

Prestressed Concrete

building material

Medal

civilian and military award

Brougham

vehicle

Estancia

Latin American history

Scribner Family

American publishers

Crane

materials handling

Chapman, John

Biography, Legend, & Facts

Diesinking

metallurgy

Crash

cloth

DuMont, Allen B.

American engineer and inventor

Waterloo Station

railroad station, London

Free-net

bulletin-board network

Videoconferencing

communications

Postcard

Facts, History, & Examples

Foam Glass

chemical compound