12The Republic of Texas claimed as its eastern and northern border the Adams–Onís border[d] with the United States and as its western and southern border the Rio Grande to its headwaters, thence north along meridian 107°32′35″ west to the Adams–Onís border with the United States. The western extent of this claim was dubious since the Republic of Texas never occupied any territory west of the 102nd meridian west. This claim included half of the Mexican province of Santa Fe de Nuevo México, established centuries before in 1598.
Additional references are included in the linked articles.
12Ulysses S. Grant (August 1, 1876). "Proclamation 230—Admission of Colorado into the Union". The American Presidency Project. Retrieved August 1, 2026.
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