The Scarlet Letter | Dear John letter | Antarctic ice sheet | White-letter Hairstreak | Letter-winged Kite | Letter of Majesty | sheet music | National Letter of Intent | letter | Cordilleran Ice Sheet | Youngstown Sheet & Tube Co. v. Sawyer | Sheet music | National Association of Letter Carriers | Chi (letter) | Beta (letter) | Barons' Letter, 1301 | Youngstown Sheet and Tube | West Antarctic Ice Sheet | The Johns Hopkins News-Letter | Strawberry Letter 23 | Sheet Harbour, Nova Scotia | Sheet Harbour | Nippon Sheet Glass | My Letter to George | Moe Letter Blues | Loudermill letter | letter (message) | Letter from an Unknown Woman | Letter bomb | Hazing in Greek letter organizations |
The Cavallini ("little horses") of Sardinia was an early private mail service, notable for the introduction of prepaid stamped lettersheets in 1819.