I posted a couple of months ago regarding a Klaxon horn I have mounted on my truck. Tiny (Stovebolter 8511) suggested that I contact AACA, which I did. Got plenty of info. Klaxons were aftermarket horns and sought after by Packard, Nash, Cadillac, etc. owners. Best of the horns that could be had = $30.00 then, or over $600.00 today. AACA sent info on how to tune the horns and routine maintenance. Thanks for the link, Tiny! This indeed is a good list!
BW