This paper illustrates the possibilities as well as the limitations of the project-history approach to testing conjectures about the nature of development. A number of histories are presented in each of several areas of military technology. The histories describe, with varying thoroughness, (1) the major uncertainties in the project's successive stages; (2) the commitments made at each stage; and (3) the size of the project's total effort and the technical advance achieved by the developed item.
Marschak, Thomas A., The Role of Project Histories in the Study of R&D.. Santa Monica, CA: RAND Corporation, 1964. https://www.rand.org/pubs/papers/P2850.html.
Marschak, Thomas A., The Role of Project Histories in the Study of R&D., Santa Monica, Calif.: RAND Corporation, P-2850, 1964. As of October 07, 2021: https://www.rand.org/pubs/papers/P2850.html