From the Howard Cannon Photograph Collection (PH-00192). Handwritten on verso: "L-R: Mrs. Howard Cannon; Senator Cannon; Mr. ? Gottchalk - Dem Comitee Member - Carson; John Koontz". Stamped on verso: "John J Nulty Photographer 230 Tahoe Drive Carson City, Nevada Tel. GR. 2-2603"
The irrigation practices on the Las Vegas Ranch were being blamed for the mosquito problem in Las Vegas, and the Las Vegas Land and Water Company was being asked to address it.