Do you mean the British hatmaker, Locke? If so, do you want only that brand, or that style? And what style of cap? (I don't know the exact names here): Irish walking cap, flat cap... If you only want the Locke brand, try Jay Kos or maybe (but unlikely) Herzfeld. If you want similar styles, check those as well as Saks, Bergdorf, Paul Stuart, and J. Press, as well as J&J Hats. I recently went up and down Madison and Fifth and found two great caps that I bought, so if you know the style and brand, maybe I can direct you. I had better luck finding Borsalino brands that fit the bill.