Over the course of 70 years, A. Alfred Taubman worked quietly and assiduously to assemble one of the greatest collections of art in private hands. Yet, for a man who lived much of his life in the glare of the public spotlight, remarkably little was known about the vast and diverse trove of masterpieces that hung throughout his homes and offices for decades. Having trained as an architect, Mr. Taubman’s keen aesthetic eye is evident throughout the collection. The exhibition at Sotheby’s will be the first and only comprehensive view into the impressive breadth and depth of his remarkable collection.