About these references. Each cheat sheet is a single page (or one large poster) designed to live on a clipboard or a shed wall, not behind a screen. The full prose for everything here lives in the seventeen guides — the cheats are the at-a-glance lookup. Source guides are noted in italics on each card. Elevation adjustment: the dates are written for the ranch at about 4,450 ft. Shift roughly 1 week later for every 500 ft higher, 1 week earlier for every 500 ft lower. Other sky islands: see Guide 1 §13 for adapting the library to the Mules, Huachucas, Chiricahuas, Santa Ritas, and other Madrean sky islands.