I plan on doing a TL with a surviving 2nd Mexican Empire and I need help confirming some information on Wikipedia according to the page on the Territorial evolution of Mexico "On March 3, 1865, he[Maximilian I] decreed the first division of the territory of the new Empire, which was published in the Journal of the Empire on March 13 of that year." The map for it is shown below. Can anyone help me find sources and older copies of this map?