The source for this charming Trio is an organ journal from around 1850. Published by Gotthilf Wilhelm Körner, it is available online as a digital copy. For my own enjoyment I made a transcription of it, and having done that, I might as well publish it. I made two versions. One version on three pages, taking in less space on the organ and taking less ink when printing. And one version on 4 pages, somewhat more easily readable, and ideal for playing from Ipad or tablet.
Score available here: http://partitura.org/index.php/johann-ludwig-krebs-trio-f-dur-krebswv-447/