what are the blue boxes at the post office
Post box [15] In 1971 the United States Postal Service changed mail collection boxes to the current USPS Dark Blue with contrasting lettering.[12][15][16] The coming of the automobile also influenced U.S. mailbox design, and in the late 1930s, an extension chute or "snorkel" to drive-up curbside collection boxes was adopted.[11]
The Post Office (play) Amal stands in Madhav's courtyard and talks to passers-by, and asks in particular about the places they go. The construction of a new post office nearby prompts the imaginative Amal to fantasize about receiving a letter from the King or being his postman. The village headman mocks Amal, and pretends the illiterate child has received a letter from the king promising that his royal physician will come to attend him. The physician really does come, with a herald to announce the imminent arrival of the king; Amal, however, dies as Sudha comes to bring him flowers.