handpan-timeline.org
the most complete archive of the history of the Handpan
https://www.dux-verlag.de/das-handpanbuch.html?fbclid=IwAR1n6-EbMkF1do4XDQd_qnW9T03kktfNFbj5ln-jtAHSN_6rP5WOY_VkmLs