THE WHISTLE, El Verano, California, Sept. 21, 1889  Noted in the masthead is: "The Official Organ of the Grape Growers & Wine Makers' Association of California". This is the volume 1, number 15 issue.
As would be expected, the content is almost entirely focused on the wine industry. The entire back, page is taken up with a vignette of 6 scenes of: "El Verano, Sonoma Valley, California" including a: "Birdseye View of El Verano". 
El Verano is a suburb of Sonoma, and during its heyday was a health retreat for San Franciscans due to the geothermal hot springs. It currently has a population of less than 4,000.
Sixteen pages, 11 1/4 by 16 inches, foxing & light dirtiness to the front page only, never bound nor trimmed, good condition.