1. Roger Wolfe Kahn and his Orchestra's 1928 recording can be found on this page, or click here to play. It's mostly instrumental, though. Only one chorus is sung. (Hey, I love this style of music. It reminds me of the soundtracks of old Laurel and Hardy movies.)
2. Another 1928 recording by Lillie Delk Christian with Louis Armstrong and his Hot Four can be found on this page, or click here to play. This has one verse and one chorus.
I transcribed these lyrics from the above 2 files. I don't know if any more verses exist.
YOU'RE A REAL SWEETHEART (Words, Irving Caesar. Music, Cliff Friend, 1928.)
VERSE: It's mighty hard to find a sweetheart, Someone who's different from the rest, And when I'm thinking of a sweetheart, I mean someone who'll stand the test. They are so few and far between. They're not like you. Here's what I mean:
CHORUS: When my pals turned me down, you're the one pal I found. You're a real sweetheart. When my darkest day came, you smiled on just the same. You're a real sweetheart. Now that I find fate has been kind, I'll build you a love nest that's all silver lined, And I'll work and I'll slave for the things that you crave. You're a real sweetheart.