Welcome to the group, maxmanseb!
Well, I may be stating the obvious here, but I am not an Esperanto speaker…
I am guessing in that the titles you mention above are:
Tinĉjo en Tibeto = Tintin in Tibet
La Krabo kun oraj pinĉiloj = The Crab With the Golden Claws
La nigra insulo = The Black Island
Do you actually read/ speak Esperanto?
Addendum: I followed the link, and answered my own question about which title was which! There is currently a copy of
La nigra insulo on eBay at the moment, if anyone is keen…