Measure of Emptiness is a meditation on the vast spaces of the Great Plains, the heartland of American agricultural productivity, and the centrality of the grain elevator to its social, cultural and symbolic life. In photographs made between 1972 and 1977 with the support of fellowships from the Guggenheim Foundation and the National Endowment of Art, Frank Gohlke traveled back and forth through the central tier of states from his home in Minneapolis, Minnesota, to the Texas Panhandle, seeking an answer to the puzzle of the grain elevators’ extraordinary power as architecture in a landscape whose primary dramas were in the sky.