Old/Archaic/Souther expression for closing a letter?

[kzm007]

I'm a big Carter Family fan, and I've got the complete CD recorded works to prove it. I was listening to a song entitled "Charlie and Nellie," which is about a man writing his ex-lover asking for his letters, his ring, and his picture; you know, back when people cared to write one another, actually had time to do such things. But it's late and I'm afraid I'm rambling on.

One of lines goes like "I close with many kind wishes/Respectably yours, Charlie Brooks."

I have heard 'respectfully yours' being in letters before, and I often write it myself, but is the above variant common, or was it at one time in the past?

The song was recorded in '35 or so, but I'm sure a different version is earlier, no doubt.

Just curious?

Forgot an 'n' up there curse my perfectionism!