Does anyone know where I can get hold of some copies of these? I have "Grave Decend" and "Zero Cool" where were recently republished by Hard Case Crime... however my internet searching has found nothing on anyof the other titles...

Hi tonyburrows, welcome to the MC message board. To answer your question I would first ask what book sites you visited. I assume you googled "used books?" That said, as far as I know with the exception of the two you mention the others by John Lange are out of print and such manuscripts are unavailable for copyright purchase from their original publishers in order to republish. The only way I know any of these books may be found is by the hit- and-miss, online auction/bid process, if you can find them. These are extremely rare. Hope this info helps.