Bill Blashack, Plum Valley Creamery. 3-1/2" x 4-7/8" black and white photograph of a man at work identified as manager Bill Blashack, Plum Valley Creamery, Waldorf, Minn. Friday Butter Printer. Notation on back reads, "Manager Bill Blashack takes butter out of churn by hand and throws it into "Friday box," Taken during final butter making, February 1984."