Vol. 4 No. 1 7/11/1903 Picturesque and Beautiful Places In and About Pueblo
Vol. 4 No. 2 7/25/1903 The Merchant Iron Department of the Minnequa Works at Pueblo
Vol. 4 No. 3 8/1/1903 The Yard Department at the Minnequa Plant and Its Varied and Important Work
Vol. 4 No. 4 8/8/1903 Anthracite Mine at Floresta
Vol. 4 No. 5 8/15/1903 Men Who Mine Ore and Make Steel for the Colorado Fuel and Iron Compan
Vol. 4 No. 6 8/22/1903 Blooms, Billets and Bars
Vol. 4 No. 7 8/29/1903 Details of the Year’s Work of the Sociological Department
Vol. 4 No. 8 9/5/1903 Work Done by the Medical Department
Vol. 4 No. 9 9/12/1903 Point Loma, California and the Theosophists
Vol. 4 No. 10 9/19/1903 Mexicans and Their Customs: Who These People Are and How They Live
Vol. 4 No. 11 9/26/1903 “Mexico” or “Mexican Town”: Picturesque Settlement of Smelter Laborers in the Heart of Pueblo
Vol. 4 No. 12 10/3/1903 Rolling Rods
Vol. 4 No. 13 10/10/1903 The Storehouse at the Minnequa Works: How Supplies are Ordered, Stored, and Issued
Vol. 4 No. 14 10/17/1903 Dynamos, Motors, Lights: Equipment of the Electrical Department
Vol. 4 No. 15 10/24/1903 Making Bolts and Nuts
Vol. 4 No. 16 10/31/1903 Open Hearth Process for Making Steel
Vol. 4 No. 17 11/7/1903 Pueblo: Some Reasons for Her Growth and Stability
Vol. 4 No. 18 11/14/1903 Forestry and Irrigation
Vol. 4 No. 19 11/21/1903 Club Houses and Recreation Halls
Vol. 4 No. 20 11/28/1903 Cuatro, Colorado
Vol. 4 No. 21 12/5/1903 Making Staves and Heading
Vol. 4 No. 22 12/12/1903 Making Kegs at the Minnequa Works
Vol. 4 No. 23 12/19/1903 Christmas Trees and Toys
Vol. 4 No. 24 12/24/1903 Excellent Public Schools
Vol. 4 No. 25 1/2/1904 Statistics of Our Iron and Steel Production
Vol. 4 No. 26 1/9/1904 Reminiscences of Irwin or Ruby Camp