Introducing
Mr. Henry Wilson.

This shows on its face the nature of the communication.

Here is a good form:

111 Payne Ave., Montrose, Ill.
September 27, 1910.
Mr. Norman R. Lloyd,
Chicago, Ill.
Dear Mr. Lloyd:

This will introduce my esteemed
friend Mr. Thomas T. Fletcher, of this
town. Mr. Fletcher contemplates opening
a drug store in Chicago. Should he do so
he will prove an acquisition to your City.
Any favor you can render him will be much
appreciated by,
Yours faithfully,
George W. Brown.

RECOMMENDATIONS

Every man of standing and every employer of labor is at times
called on to certify to the character, or to give a testimonial to
some esteemed employee who is about to seek his fortune in another
place.