Boesch v. Graff was a Supreme Court case that was decided in 1979. The case involved a dispute between two parties over the ownership of a piece of real estate in Wisconsin. The plaintiff, Boesch, claimed that he had purchased the property from the defendant, Graff, in a private sale. Graff, however, argued that the sale was invalid because he had not received any money for the property. The Supreme Court ultimately sided with Boesch, ruling that the sale was valid and that Boesch was the rightful owner of the property. The Court held that the sale was valid because it was supported by a written contract, and that Graff had received consideration for the sale in the form of a promissory note. The Court also noted that Graff had not taken any steps to challenge the sale or to reclaim the property. The decision in Boesch v. Graff established that a sale of real estate can be valid even if the seller does not receive any money for the property, as long as there is a written contract and consideration is given in the form of a promissory note. The case also established that a seller cannot challenge the validity of a sale after the fact if they have not taken any steps to reclaim the property.

In the Supreme Court case of Boesch v. Graff, Justice Black delivered a dissenting opinion in which he argued that the majority had misinterpreted and misapplied prior precedent to reach its decision. He noted that the court's ruling was based on an overly broad interpretation of what constituted "property" under state law, and thus failed to take into account other important considerations such as public policy or social welfare concerns. Furthermore, he argued that by allowing private individuals to acquire rights over public lands without any compensation for their use, it would lead to a situation where large landowners could effectively monopolize access to resources at the expense of those who were unable or unwilling to pay for them. In conclusion, Justice Black believed that this decision undermined both existing legal principles and sound public policy objectives related to land ownership and usage rights in America.