I was working for Curt Mosso at the UCSB computer center when SAS was in it's initial development and testing. We were frequently used as a Beta site and made contributions. One of our off campus clients was processing large (at that time) data sets, so large that they called the project 'tape to tape'. I'm sure that the One Pass calculations were very useful in producing descriptive statistics from that project. Your article brought back memories.. Thank you.