A 1995 private letter ruling1 held that an undivided one-sixth interest in farm real estate that was held for productive use in a trade or business or for investment which was exchanged for a 100 percent interest in other farm real estate qualified as a tax-free, likekind exchange.2 The exchange involved crop share leases. The letter ruling did not state whether it was a material participation crop share lease or a non-material participation crop share lease.3 The letter ruling recites the basic requirements for a like-kind exchange4 but did not anticipate what was to come two years later as the result of another private letter ruling5 which added another set of requirements as noted below. But looking just at the like-kind exchange require...