The collection contains some of the working papers that were generated by Douglas McGavin Calerwood during his time at the Department of Architecture at the University of the Witwatersrand.
The newsletter "Now and Then" was published by the local committee of the National Union of South African Students (NUSAS) at the Johannesburg College of Education, and later became the official newspaper of the Johannesburg College of Education.
Included are the following issues: First - Third issue 1960 and 12 October 1960 March, April, May, August, November 1961 April and September 1962