Journal Article The Remembrance of Things Past: Rings and Mules Revisited Get access Lars G. Sandberg Lars G. Sandberg Ohio State University Search for other works by this author on: Oxford Academic Google Scholar The Quarterly Journal of Economics, Volume 99, Issue 2, May 1984, Pages 387–392, https://doi.org/10.2307/1885534 Published: 01 May 1984