I have made a drawing of the guitar by Johann Georg Stauffer 1829, No. 480, University of Edinburgh, UEDIN 3838 and I am publishing the PDF as a free download. The file size is 224KB and the printed drawing measures 105 cm x 61 cm. This is a working drawing and includes only the guitar's major construction features. Details of the guitar are presented with photos and explanation in my post of October 5, 2014.
Click on the link to view and download the PDF : Stauffer Guitar PDF