In 1943 Messerschmitt gave a short after dinner speech about the development of all metal stressed skin aircraft, at TU München
to commemorate the 75th year of the University. I have translated it and uploaded to my website, it is not very technical, and quite brief but you might find it useful to read. Included is the original German manuscript in his handwriting.
This photograph is from the actual dinner in question, and is not some generic photo found online.