Sentence:  Formerly a tight, <WSD>closehanded</WSD> group of archives in fear of studio snoops in search of misappropriated property in the archives' collections, they have since blossomed into relatively open "cinematheques" complete with Rene Beauclair's The International Directory of Film and TV Documentation Centers (1988). 
Meaning of the word marked with <WSD> tags:  Secretive.