Stephen Johnson Field,
United States v. Iron Silver Mining…
“ In this respect the United States, as a landed proprietor, stand upon the same footing with the private citizen. The burden of proof in such cases is upon the government. The presumption attending the patent, even when directly assailed, that it was issued upon sufficient evidence that the law had been complied with by the officers of the government charged with the alienation of public lands, can only be overcome by clear and convincing proof. ”
