1894 Twain in the laboratory of Nikola Tesla Colorado Springs United States › Colorado › El Paso › Colorado Springs
c.1900 Nikola Tesla in his laboratory Colorado Springs United States › Colorado › El Paso › Colorado Springs
1899 Nikola Teslas high voltage laboratory Colorado Springs United States › Colorado › El Paso › Colorado Springs
1879 Downtown Colorado Springs, Bijou and Tejon. Colorado Springs United States › Colorado › El Paso › Colorado Springs
c.1890 ~32km Stagecoaches and freight wagons on the road Cripple Creek United States › Colorado › Teller › Cripple Creek
