1919 Ad Blaw-Knox Pittsburgh Engineer Panama Canal Steel Architecture SCA3 XGIB8 The ad features a dynamiting

The ad features a dynamiting operation in a Southern quarry

is located in Indianapolis

and Architecture

Round Steak

elastic cord

1919 Ad Blaw-Knox Pittsburgh Engineer Panama Canal Steel Architecture SCA3 XGIB8 The ad features a dynamitingThis is an original 1919 black and white print ad for the Blaw Knox Company of Pittsburgh, Pennsylvania. Shown in the image are workers constructing a subway system. The company offered steel forms, clamshell buckets, fabricated steel, water cooled appliances, plate work and towers. CONDITION This 92+ year old Item is rated Very Fine ++. Light aging throughout. Light wrinkling. No natural defects. No surface rub. No tears. No water damage. Product