Show AIR MAIL SERVICE GROWING the united states air mail service was established in 1918 avei a single mile route and has grown to some route miles in the domestic system and more mare than miles in our foreign air mail system the postal savings system was first in england in 1861 and in the united state in 1911 and we now have about depositors with total deposits 0 of f the rural mail service extends to some pait rons annually and em emt ploys some carriers ano wl cover more than one million miles a day the parcel post service ranks in revenue second only to first class mail matter and the service represents 20 percent of the business of the post office between ten and fifteen million dead leters are received annually at the dead letter office and the amount of money found in them acou acourY rits ts to more than a year |