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SwellMap: C.P.R. Elevators, Fort William, Ontario
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SwellMap: Grain Elevator, Montreal, Quebec
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SwellMap: The Big Lock In Lake Washington Canal
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SwellMap: Shasta Dam, California
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SwellMap: Grand Coulee Dam, Washington
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SwellMap: Caterpillar No. 583 Pipelayer Near Greensburg, Kansas
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SwellMap: C.P.R. Pier, Vancouver BC
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SwellMap: The Gatun Locks, Panama canal
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SwellMap: Garrison Dam, 1957
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SwellMap: Newest Type Oil Drilling Equipment, LaGrange, Texas
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SwellMap: Oil Drilling Rig, An Important Economic Factor In The Economic Life Of Mississippi
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SwellMap: Oill Drilling Rig
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SwellMap: Venice Oil Wells, Los Angeles, California
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SwellMap: Signal Hill, Producer Of "Black Gold", Long Beach, California
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SwellMap: A Pumping Unit In General Use Now Replaces The Derrick
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SwellMap: Kitt Peak National Observatory, Tucson, Arizona
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SwellMap: Palomar Observatory, Palomar Mountain, California
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SwellMap: Palomar Observatory, Palomar Mountain, California
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SwellMap: Open Hearth Furnace, US Steel Homestead District Works, Munhall, Pennsylvania
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SwellMap: The Pot Line At Cominco, Trail BC
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SwellMap: Gary Steel Works, United States Steel Corporation, Indiana
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SwellMap: Superweld Batch-Type Multiple-Muffle Hydrogen Atmosphere Furnace For Large Assemblies, Superweld Corporation
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SwellMap: Alcan's Smelter, "The Aluminum City", Kitimat BC
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SwellMap: Open Hearth Furnace, Bethlehem Steel Plant, Johnstown, Penmnsylavnia
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SwellMap: The Vermont Marble Company, Proctor, Vermont
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SwellMap: The Vermont Marble Company, Proctor, Vermont
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SwellMap: National Park Service Technicians Prepare Fossil Backbones, Quarry Visitor Center, Utah
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SwellMap: Removing The Curd, Green County Swiss Cheese Factory, Monroe, Wisconsin
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SwellMap: The Marble Exhibit At Proctor, Vermont
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SwellMap: Juicy, Tender Pineapple From The Prime Cut, Dole Pineapple, Hawaii