Pope & Another v. Allis was a United States Supreme Court case that dealt with the issue of whether a contract between two parties was valid. The case involved two parties, Pope and Allis, who had entered into a contract for the sale of a steam engine. Allis had agreed to pay Pope a certain amount of money for the engine, but then refused to pay the full amount. Pope then sued Allis for breach of contract. The Supreme Court held that the contract between the two parties was valid and enforceable. The Court found that the contract was supported by consideration, meaning that both parties 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 held that the contract was not void for lack of consideration, meaning that both parties had received something of value in exchange for their promises. In conclusion, the Supreme Court held that the contract between Pope and Allis 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 consideration.

In the case of Pope & Another v. Allis, Justice Field delivered a dissenting opinion in which he argued that the majority had misinterpreted an earlier decision by the Supreme Court and thus incorrectly decided this case. He believed that under the facts presented, there was no legal basis for denying compensation to Mr. Pope and his partner for their services as contractors on a government project. According to Justice Field, they were entitled to payment because they had performed all of their contractual obligations with reasonable diligence and skill; therefore, any failure on their part should not have been held against them when determining whether or not they deserved remuneration from the government. Furthermore, he noted that even if some fault could be attributed to them it would only serve as grounds for reducing rather than eliminating payment altogether - something which did not occur here since no amount was awarded at all despite clear evidence of performance on behalf of Mr. Pope and his partner