La Porte Express Co./La Porte. Blue oval handstamp on 3¢ Pink entire with company frank to San Francisco, struck at left is bold "Dr. Willard's Book & Drug Store, La Porte, Cal." advertising handstamp, slightly reduced at right, Very Fine and attractive, included is photocopy of illustrated lettersheet showing the town of La Porte, published by Dr. Willard. Estimate  $300 - 400. $0 (Image)