This report summarizes the results of unclassified research and development contracts in the field of peaceful use safeguards regarding the use of nuclear material. These summaries indicate there is really no sharp line of demarcation between research for safeguards and research for many other purposes. It includes areas of research effort and expenditures since the formal beginning of research for safeguards in 1955. The reports have been grouped according to the following subjects: analytical methods; calculation of heavy isotope content of reactor fuel; fuel element analysis; gamma spectrometers; inspection procedures; inventory control; mathematical models for fuel cycle analysis; plant protective and monitoring systems and devices; process instrumentation; reactivity measurements; and sampling. (Author/JG)