professional activities.

The article informs about some activities of the Association for Computing Machinery (ACM). The ACM's Washington D.C. Chapter's 1973 Technical Symposium will take place at the National Bureau of Standards, Oaithersburg, Maryland, on June 21. Program Chairman is Helmut E. Thiess. The article also informs that the 4th Annual Symposium of the ACM Special Interest Group on Computer Systems Installation Management is scheduled for October 18-19 in Las Cruces, New Mexico. Papers are invited on the following topics: security; virtual systems evaluation; data entry systems-COM; personnel evaluation, measurement, and development; nonprofessional status of data processing personnel; job estimation; etc. The American Society of Indexers will hold its Second Annual All-Day Meeting on Saturday, April 28, at the Graduate Center of the City University of New York. Editors, indexers, librarians and index users will participate in forums and speeches concerned with "Index Traps and Pitfalls: Human Generated/Computer Generated." Three speakers for the morning session include Jessica L. Harris, a professor.