From the Thelma Todd Fans group on facebook.
Richard Finegan Bil, The Paramount still code number 1258-108 confirms that one is from FOLLOW THRU. A still from ALL TEED UP would have still number C-28.
I noticed that in the stills gallery in the first volume of the Charley Chase Hal Roach shorts, they also mis-identify a still from FOLLOW THRU as one from ALL TEED UP.
But isn't it cool that she wears the same outfit in both films - I wonder if it was something of her own.
And by the way, if you haven't seen it, I recommend FOLLOW THRU - great fun musical, and Thelma in Technicolor.