#DC016 - Group of 4 Early Whitman Monument Milk Caps You get 4 for $1 (that's 25¢ each). Vintage 1 5/8" diameter milk caps from the Jersey Parlor Dairy. They picture the Whitman Monument and say Whitman Monument with a four digit phone number. These are old unused stock from the dairy from around the 1930s when the the Whitman Monument was a big attraction. It was approved by the Roosevelt administration and it memorializes Narcissus and Marcus Whitman who were the first white settlers in the Walla Walla Washington area. These are very old, in nice condition, and very uncommon. $1.00