February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

In 1977, 424 million recreation days were reported at 440 Corps lakes and other project areas. As a result of the growing number of visitors entertained at Corps projects annually, planners and managers need information about the recreation activities, facilities, and preferences of these users. To provide for these needs, MRI undertook a research project to improve the visitation input data to the RRMS and evaluate the need for an overall recreation information system.