Central Control Room in the Engine Research Building

Mezzanines, building, interiors

Andy Li · 6144×8160

Rifle Colorado post office interior 4

Doncram · 3264×2448

Rifle Colorado post office interior 5

Doncram · 3264×2448

Old Patent Office, model room - Washington, D.C.

Brady-Handy · 1674×1737

Rifle Colorado post office interior 1

Doncram · 3264×2448

Rifle Colorado post office interior 2

Doncram · 2448×3264

South Norwalk Post Office interior 080

Pedro Xing · 2048×1536

Interior of US Assay Office, ca 1916 (MOHAI 5440)

Webster & Stevens · 700×568

Stacks of documents in Patent Office, Washington, D.C. LCCN93510973

National Photo Company Collection · 4096×3276

Dos, green, carpets

U.S. Department of State from United States · 4470×2961

St marys no 5 pm 1 of 2

Achim Hering · 3488×2368

Oregon, state, office

Norman, James, creator · 5481×4379