The problem is: There are too many songs titled LET HER GO – or some variation thereof. These are listed at The Online 78 rpm Discographical Project (which is nicely indexed at Honking Duck):

Art Shaw & His New Music
* LET 'ER GO - Vocalion - 4438
* LET 'ER GO - Brunswick - 7986
Big Bill [Broonzy]
* LET HER GO, SHE DIDN'T KNOW - Conqueror - 8577
* LET HER GO, SHE DIDN'T KNOW - Melotone - 5-11-67
Bill 'Jazz' Gillum
* LET HER GO - Bluebird - 8027
Billy Murray
* LET HER GO, LET HER GO - Victor - 17374
Brown & Bunch
* LET HER GO I'LL MEET HER - Supertone - 9375
Bunny Berigan & His Orch
* LET 'ER GO - Victor - 25646B
Casey Bill Weldon
* YOU JUST AS WELL LET HER GO - Vocalion - 03274
Fletcher Henderson & His Orch
* LET 'ER GO - Vocalion - 3713
Foster + Rutherford
* LET HER GO I'LL MEET HER - Gennet - 6746
Frank Sinatra
* DON'T CRY JOE, LET HER GO - Columbia - 38555
Frankie Laine
* I LET HER GO - Columbia - 39979
Glen Gray and the Casa Loma Orch
* LET ER GO (v. Pee Wee Hunt) - Decca - 1396A
J. E. Mainer's Mountaineers
* LET HER GO GOD BLESS HER - Bluebird - 6104
Jimmy McCracklin
* JUST WON'T LET HER GO - Modern - 20-762
Johnny Desmond
* DON'T CRY JOE (let her go) - MGM - 10518
Little Eddie Boyd
* I HAD TO LET HER GO - RCA Victor - 20-2311
Mainer Mountaineers
* LET HER GO GOD BLESS HER - Montgomery Ward - 4970
Marlow & Young
* LET HER GO I'LL MEET HER - Champion - 15691
Ray Bloch
* NEVER LET HER GO - Coral - 60747
Ted Daffan's Texans
* LET HER GO - Columbia - 20250
* LET HER GO - Conqueror - 9700
* LET HER GO - Okeh CBS - 05796
* LET HER GO (v. Chuck Keeshan) - Columbia - 37651
Tommy Tucker Time
* LET HER GO - Columbia - 38247
Vernon Geyer (Organ Solo)
* LET ER GO - Bluebird - 7286
Walter Van Brunt (Tenor)
* LET HER GO, LET HER GO - Columbia - A-1361
Welly Trice
* LET HER GO, GOD BLESS HER - Decca – 7358

Here's a strategy you might try: Go to www.allmusic.com and listen to sound samples until you recognize the song you want. They have 30-second sound samples of nearly every song that is currently available on commercial CDs.

After you recognize the song, come back here and tell us what you found. Then we might have a better chance of finding complete lyrics for you.

It sounds like an interesting song. I'd like to help.