by John Reynolds (CASS)

Left: The original Mills Cross built in the 1950s on the outskirts of Sydney produced the ground-breaking MSH (Mills, Slee & Hill 1958 , 1960 , 1962 ) catalogue of 2270 radio sources, triggering a famous controversy in cosmology. In 1955 Bruce Slee is seen examining one of the chart recorders, with other instrumentation visible in the foreground. – Right: Bruce Slee’s CSIRO staff photo, in 1983.