[Air-l] ARPAnet history question

When ARPAnet connected the four universities in 1969, were there only actually four computers connected to each other? If not, does anyone know how many? A source (not Wikipedia or your personal memory) for this information would be much appreciated. Thanks, Ulla ****************************** Ulla Bunz Assistant Professor Florida State University University Center C, Suite 3100 Tallahassee, FL 32306 Phone: 850-644-1809 ******************************