According to FMLegacy the first show of 1975 was on April 12 at the Balboa Bowl in San Diego and the second show was 3 weeks later on May 5 at the Northlands Coliseum in Edmonton, AB. The El Paso date is listed after that with possibly a few dates missing inbetween. (
http://web.archive.org/web/201208262....com/main.html). So did these pre-El Paso dates actually take place, does anyone have any info?