When street addresses like "Broadway," "Park Row," "Aborn Drive," are written, it is superfluous to write "St." after them.
The older form of writing an address was to end each line with a comma. The more recent style, and one coming into quite common use, is to omit the comma, using only such punctuation as the sense of the words within the line demands. Either way is permissible.
Uniformity and concise clearness are characteristics of a well-written address. An address should be written as follows:
| Mr. Frankel Banchman, |
| 15 Westland Avenue, |
| Philadelphia, |
| Pa. |
If the directions are to be included, then the following arrangement is better:
| Mrs. Arthur L. Casson, |
| North Maplewood, |
| Chestnut County, |
| Care of Mr. Hiram Casson. N. Y. |
The sign of per cent is no longer used to signify "care of."
A clergyman is addressed "The Reverend John L. Wrigley, D. D.," or, less correctly, "Rev. John L. Wrigley, D. D.," which may be transposed to "Rev. Dr. John L. Wrigley." The omission of the article before the word "Reverend" is quite common.
A physician is properly addressed, "Algernon Brigham, M. D.," and the salutation is "Dear Dr. Brigham," or "Dear Doctor," if he is an intimate friend. A man having the title of Doctor with any other significance than that of Doctor of Medicine, is usually addressed "Dr. Frederic V. Harlan." A very formal way, however, would be to address such a one,—supposing each of the titles to be his,—as "Professor Frederic V. Harlan, Ph. D." For the letter, the salutations "Dear Professor Harlan" and "Dear Dr. Harlan" are equally correct.