Show y t c Airmail Pointers 4 t I If 4 ION is bein in S Salt take Lake Lake to the fact that r f r airmail irma may be lt in any mail box and with any of stamps stamps-so l ng as the letter is marked Air Mail E A Airm r iI vol volume of f th lh United states will S J nl th than n double when mailers generally come to understand that airmail may be deposited in n mail box in the opinion of f statisticians who have studied this lem Failure of f the American people to appreciate ap- ap predate this fact is said to be the chief de- de to widespread use of airmail service for both business and social mail The misunderstanding arose it is said through establishment of special white red blue mail boxes as depositories for airmail only This arrangement was essential during during dur ing the incipiency of airmail and still serve a definite need since minute last c collections are made from such boxes to connect departing airplanes Th The special boxes are designed for that function Mailers desiring to us use airmail and posting their letters letters let let- before the last general collection previous to to the closing hour on airmail at the central postoffice may just as well deposit their airmail air air- mail in in the nearest regular I letter box |