Antique printed color map of New York State, published in Asher & Adams' New Topographical Atlas and Gazetteer of New York.
The map shows the average mean temperature for the year bu isothermal lines (red) and the mean average rainfall in inches (shaded boxes).
Asher & Adams was a New York publishing firm known for their atlases. Notably, their maps were some of the first to prominently exhibit railroad lines, even if this meant a slight reduction in topographical detail. They specialized especially in state and county maps of the United States.