by Mike Hays The hand-painted, WPA-era Murals that cover most of the upper part of the high-ceiling, art deco style Nyack Post Office have survived intact for nearly 90 years. The Federal Government commissioned numerous murals depicting daily life for post offices during the Depression. Three post office projects were sponsored in Rockland County: Spring Valley got a small mural, Suffern a plaster relief, and Nyack got a large-scale multi-panel mural. The Nyack murals stand out not only for their artistic merit but because some of the panels depict a biased view of Native Americans that have been the object of at least one protest.