Postal Rate Commission
Post Office
US Post Office
PO
United States Post Office
third-class mail
third class
US Postal Service
United States Postal Service
USPS
local post office
post office
snail mail
registered post
registered mail
mail
accountable mail
special delivery
postmaster general
shipping
US Postal Inspection Service
United States Postal Inspection Service
provisional
express mail
mails
express
prephilately
Postmaster General
postroad
parcel post
flaps and seals
tax stamp
fiscal stamp
recorded delivery
freepost
dead letter office
rural free delivery
poste restante
RFD
zip code
Meghdoot card
letter box
star route
postal note
mailbox
postbox
United States Government Printing Office
GPO
US Government Printing Office
charity stamp
Government Printing Office
semi-postal stamp
open rate
postage meter
e-mailbox
postmark
philately
post town
PO box number
box number
POB
letter-stamp
post-office box number
PO Box
packet-boat
PO Box No
call box
Post-Office box