A Compilation of the Messages and Papers of the Presidents…
“ For a quarter of a century the quantity of land subject to agricultural preemption has been limited so as not to exceed a quarter section, or 160 acres; and, still further to guard against monopoly, the privilege of preemption is not allowed to any person who owns 320 acres of land in any State or Territory of the United States, nor is any person entitled to more than one preemptive right, nor is it extended to lands to which the Indian usufruct has not been extinguished. ”
