Phelps & Others v. Oaks & Others was a United States Supreme Court case that dealt with the issue of whether a contract between two parties was valid. The case involved a contract between the plaintiffs, Phelps & Others, and the defendants, Oaks & Others, for the sale of a tract of land. The plaintiffs argued that the contract was valid and enforceable, while the defendants argued that the contract was invalid and unenforceable. The Supreme Court held that the contract was valid and enforceable. The Court found that the contract was supported by consideration, meaning that each party had given something of value in exchange for the other's promise. The Court also found that the contract was not void for lack of mutuality, meaning that both parties had agreed to the same terms and conditions. Finally, the Court found that the contract was not void for lack of capacity, meaning that both parties had the legal capacity to enter into the contract. In conclusion, the Supreme Court held that the contract between Phelps & Others and Oaks & Others was valid and enforceable. The Court found that the contract was supported by consideration, was not void for lack of mutuality, and was not void for lack of capacity.

Justice Field delivered the dissenting opinion in Phelps & Others v. Oaks & Others, arguing that the majority had erred in their decision to uphold a judgment of foreclosure against certain mortgagors who had failed to pay interest on their mortgage debt. He argued that while it was true that the mortgagors were obligated by law to make payments, they should not be held liable for failing to do so when there was no proof of any actual damage or loss suffered by the mortgagees as a result of nonpayment. Furthermore, he maintained that even if some damages could be proven, such damages would have been limited and thus insufficient justification for ordering foreclosure proceedings against them. Justice Field concluded his dissent with an appeal for greater consideration from courts towards those unable to meet financial obligations due solely to circumstances beyond their control.