Doug Englebart is the creator and evangelist for so much of modern computer interfaces. Mice, drag and drop, the desktop, all these were part of implementing his vision of computers as helpmates. The key papers are listed below. Beyond this there is a very interesting video of his early work “the mother of all demos” which you can see online.22
Engelbart, D.C. (1962). Augmenting Human Intellect: A Conceptual Framework.
Engelbart, D. C. and W. K. English (1968). A research center for augmenting human intellect. Proceedings of the AFIPS Fall Joint Computer Conference. Washington, DC; The Thompson Book Company, pp. 395–410.
Engelbart, D. C. (1988). ...