The DECUS conference proceedings I've scanned gives attendance DECUS membership 1961-1972
1961 12 1962 25 1963 43 1964 202 1965 426 1966 850 1967 2008 1968 3476 1969 6054 1970 9110 1971 12213 - 5590 installation delegates, 6623 individual members. 1972 15295 - 7052 8243 This is only up through the start of the PDP-11, it obviously got MUCH bigger after that. There were also large LUGs (Local Interest Groups) The ones in Milwaukee and Chicago were pretty big. On 12/8/18 10:10 AM, Adrian Stoness wrote: > how big were the decus confrinces back in the day?