Vintage Albert Pick Hotel drinking glass from one of their Purple Cow Sandwich Shops. Pyroglazed picture of cow on front and on back is the verse, " My Love She is Purple Cow. Her Life's an Open Book. Bright are her Eyes and Pure her Brow. And Oh! How She Can Cook! " and at bottom are the words, Operated by Albert Pick Hotels. Glass is 4" high the old milk glass size. Made by Federal Glass Company for Albert Pick it has the F in shield mark on base of glass. Glass is clear and bright and pyroglaze decoration is not worn. A super find!