The salesman's salesman

Two men and three women examining fabric sample; other samples in background. Caption: "THE SALESMAN'S SALESMAN: David Gray, center, selling superintendent at Abraham & Straus, gives a practical lesson of his technique at the opening of the store's 'Sell Well Campaign.' Sales personnel is being trained to know their merchandise and learn the needs of their customers. Left to right are Abraham Green, vice president of the basement store; Anne Morgen, training director; Mr. Gray, Judy Wallett and Margaret Wallace."