When compiling computerized databases from information obtained from interviews, questionnaires, & research Ss, the utmost care should be taken to maintain the confidentiality of the information. Names, addresses, & phone numbers should be deleted from aggregate files. The problem of preserving the anonymity of data in long-term studies involving the recontacting of Rs is examined. Current large-scale projects in Germany & the Netherlands are discussed in this regard. 2 References. M. Meeks