Tulsa Sapulpa Union Rwy, SW7 at Sapulpa, OK, 1999
A single Tulsa Sapulpa Union Railway Electro Motive SW7 #107 (former Northern Pacific, built 1950) slowly, but steadily, works its way up a grade southbound (geographically speaking) apparently pulling a short, but heavy train. The consist of eight covered hopper cars may be loads of sand for the glass bottle plant ahead on the mainline tracks in nearby Sapulpa, OK. Video was recorded of the TSU between the two namesake cities and the date was October 8, 1999. Admittedly, I've heard better sounding locomotive horns!