This is an extension of linklog 2, just some links I wanted to make available to myself and thought, maybe someone else can use them too.
https://en.wikipedia.org/w/index.php?title=Gedackt&oldid=827664626 question... do stopped "strings" exist? This doesn't say, and neither does anyone else. (Maybe they don't need to, every organist knows... In case it's not obvious, I'm not an organist, love the instrument but never managed to learn it).
https://en.wikipedia.org/w/index.php?title=String_pipe I created this so don't get your hopes up...
http://www.pykett.org.uk/tonal-structure-of-organ-strings.htm
https://www.lawrencephelps.com/Documents/Articles/Beginner/pipeorgans101.html
http://www.animations2.physics.unsw.edu.au/music/people/publications/Fletcher1977a.pdf
https://www.die-orgelseite.de/pfeifenarten_e.htm
http://faculty.bsc.edu/jhcook/orghist/works/works03.htm#string
http://nersp.nerdc.ufl.edu/~bodinew/Pages/Pipes.html
http://nersp.nerdc.ufl.edu/~bodinew/Pages/Overview.html
http://nersp.nerdc.ufl.edu/~bodinew/Pages/PitchLevels.html
http://nersp.nerdc.ufl.edu/~bodinew/Pages/SoundCharac.html
http://www.organstops.org/index.html
http://www.organstops.org/s/StoppedDiapason.html