A sample used in research undertaken by Nicholas Dopuch and Morton Pincus identified 70 firms which switched from FIFO to LIFO during the period 1965-78: Dopuch, N. and Pincus, M., Evidence on the Choice of Inventory Accounting Methods: LIFO Versus FIFO, Journal of Accounting Research, Volume 26, No. 1, Spring, 1988, p. 34, accessed on 11 March 2025