June 29, 1962 - Toting some 3,000 pounds of music, supplies, and instruments, the Harvard-Radcliffe Orchestra and HRO Conductor Michael C. Senturia '58 arrive in Mexico City for a 59-day cultural-exchange concert tour of Mexico.

Early June 1970 - The newly formed group Peace Action at Harvard sends out 55,000 letters to College alumni and Radcliffe holders of Harvard degrees (Classes since 1963) as part of a campaign to raise $100,000 for nationwide efforts to end the Vietnam War.

June 10, 1970 - The Law School dedicates its recently completed classroom and office building as Roscoe Pound Hall, in honor of the late Law School Dean (1916-1936) and University Professor.

June 20, 1970 - At 2 a.m., Harvard switches from its old manual-switchboard telephone system to a new $10.5 million automated Centrex system.

June 21, 1971 - In the basement of the Memorial Church, the Harvard Yard Day Care Center opens, ready to serve about 25 children.

- From the Harvard Historical Calendar, a database compiled by Marvin Hightower