The Moss Beach Post Office gets high marks for balancing the books in 1917.
The letter (click to enlarge or read below) is from:
United States Post Office
Burlingame, Cal. Nov. 3. 1917.
Moss Beach, Cal.
I have received from you this date under register No. 59 stamped paper for credit amounting to $180.71.
It is a pleasure to receive a report correct. Would like to shake hands with you.
Central Accounting Postmaster