Post Office, Boston, Mass. 190 POSTMASTER, BOSTON, MASS. Please recall and deliver to myself or bearer a letter deposited in addressed to. and described as follows: about M., on 190 and in same handwriting as this application, and which was written by me, or by my authority, and which I do not desire delivered to addressee for the following reasons: It is hereby agreed that if the letter is returned to me, I will protect you from all claims made against you for such return, and will fully indemnify you for any loss you may sustain by reason of such action, and I herewith deposit $. to cover all expenses incurred, and will deliver you the envelope of letter returned. RECEIVED,. (Address) -9 190, of the Postmaster of Boston, the above-described piece of mail matter for account of the sender. WITNESS: (Address). [Recall of letter after it has left office of mailing.] quires it, post offices must be kept open for an hour or more. If the mail is received during the time of public worship, the office need not be opened until after the close of services. Offices need not be opened on Sundays if no mails are received between the hour of closing on Saturday and 6 P.M. Sunday. In case post offices are open on Sundays delivery of mail must be made to all who apply, as well as to box holders. Postage stamps may be sold; but money orders need not be issued or paid. The regis tration of mail matter and the delivery of registered matter on Sundays is left to the option of each postmaster. Special delivery mail must be delivered on Sundays as well as on other days, if the post office is open on Sundays. The carriers' windows at free delivery offices must be opened for the delivery of mail matter on Sundays. and holidays during the regular office hours. Postmasters may observe as holidays: New Year's Day (January 1); Washington's Birthday (February 22); Decoration Day (May 30); Independence Day (July 4); the first Monday in September, known as Labor Day; Christmas (December 25); and such other days as the President of the United States or the governors of their respective states may set apart as fast or thanksgiving days, or that may be specially designated as holidays by proclamation of the governors or by the statutes of the states in |