[2][3] In June 1898, Brooklyn became the Daniel Mann, Foley Bros., and Peter Larson[4] construction headquarters for the Columbia and Western Railway westward extension.
Anticipating a secure future as a mining town, infrastructure included a newspaper, hospital, large wharf, meat wholesaler, laundry, brewery cold storage, several hotels, and multiple stores.
[5] That month, a wagon road was constructed for conveying equipment and supplies from the wharf up Pup Creek to the Bulldog Tunnel project and other points along the imminent railway line.
That month, the railway contractors' payroll office,[14] followed by the balance of headquarters staff, relocated to Cascade City.
[16] By March, Brooklyn was largely deserted, but the three times weekly boat arrivals unloaded supplies for haulage to the work camps along the line.
[25] A decade later, the vacant site was included in land subdivided for orchards,[2] but was submerged when the Keenleyside Dam flooded the area in 1968.