Mexico 20 pesos, 2008 (Thanks to Luis Alfredo from Mexico)

Benito Juárez (21 March 1806 – 18 July 1872) born Benito Pablo Juárez García, was a Mexican lawyer and politician of Zapotec origin from Oaxaca who served five terms as president of Mexico: 1858–1861 as interim, then 1861–1865, 1865–1867, 1867–1871 and 1871–1872.[He resisted the French occupation of Mexico, overthrew the Second Mexican Empire, restored the Republic, and used liberal efforts to modernize the country.

Monte Albán is a large pre-Columbian archaeological site in the Santa Cruz Xoxocotlán Municipality in the southern Mexican state of Oaxaca (17.043° N, 96.767°W). The site is located on a low mountainous range rising above the plain in the central section of the Valley of Oaxaca where the latter's northern Etla, eastern Tlacolula, and southern Zimatlán & Ocotlán (or Valle Grande) branches meet. The present-day state capital Oaxaca City is located approximately 9 km east of Monte Albán.

The partially excavated civic-ceremonial center of the Monte Albán site is situated atop an artificially-leveled ridge, which with an elevation of about 1,940 m above mean sea level rises some 400 m from the valley floor, in an easily defensible location. In addition to the aforementioned monumental core, the site is characterized by several hundred artificial terraces, and a dozen clusters of mounded architecture covering the entire ridgeline and surrounding flanks (Blanton 1978). The archaeological ruins on the nearby Atzompa and El Gallo hills to the north are traditionally considered to be an integral part of the ancient city as well.

Besides being one of the earliest cities of Mesoamerica, Monte Albán's importance stems also from its role as the pre-eminent Zapotec socio-political and economic center for close to a thousand years. Founded toward the end of the Middle Formative period at around 500 BC, by the Terminal Formative (ca.100 BC-AD 200) Monte Albán had become the capital of a large-scale expansionist polity that dominated much of the Oaxacan highlands and interacted with other Mesoamerican regional states such as Teotihuacan to the north (Paddock 1983; Marcus 1983). The city had lost its political pre-eminence by the end of the Late Classic (ca. AD 500-750) and soon thereafter was largely abandoned. Small-scale reoccupation, opportunistic reutilization of earlier structures and tombs, and ritual visitations marked the archaeological history of the site into the Colonial period.

The etymology of the site's present-day name is unclear, and tentative suggestions regarding its origin range from a presumed corruption of a native Zapotec name such as “Danibaan” (Sacred Hill) to a colonial-era reference to a Spanish soldier by the name Montalbán or to the Alban Hills of Italy. The ancient Zapotec name of the city is not known, as abandonment occurred centuries before the writing of the earliest available ethnohistorical sources.

Mexico 50 pesos, 2010 (Swap with Luis Alfredo from Mexico)

José María Teclo Morelos y Pavón (September 30, 1765, City of Valladolid, now Morelia, Michoacán – December 22, 1815, San Cristóbal Ecatepec, State of México) was a Mexican Roman Catholic priest and revolutionary rebel leader who led the Mexican War of Independence movement, assuming its leadership after the execution of Miguel Hidalgo y Costilla in 1811. He was later captured by the Spanish colonial authorities and executed for treason in 1815.

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Morelia is a city and municipality in the north central part of the state of Michoacán in central Mexico. The city is in the Guayangareo Valley and is the capital of the state. The main pre-Hispanic cultures here were the P'urhépecha and the Matlatzinca, but no major cities were founded in the valley during this time. The Spanish took control of the area in the 1520s. The Spanish under Viceroy Antonio de Mendoza founded a settlement here in 1541 with the name of Valladolid, which became rival to the nearby city of Pátzcuaro for dominance in Michoacán. In 1580, this rivalry ended in Valladolid’s favor and it became the capital of the colonial province. After the Mexican War of Independence, the city was renamed Morelia in honor of José María Morelos y Pavón, who is from here. In 1991, the city was declared a UNESCO World Heritage Site for its well preserved colonial buildings and layout of the historic center.

Mexico 10 pesos (P#63i), 1977

Miguel Gregorio Antonio Ignacio Hidalgo y Costilla y Gallaga Mandarte Villaseñor (8 May 1753 – 30 July 1811), more commonly known as Miguel Hidalgo y Costilla or simply Miguel Hidalgo, was a Mexican priest and a leader of the Mexican War of Independence.

In 1810 Hidalgo led a group of indigenous and mestizo peasants in a revolt against the dominant peninsulares under the banner of the Virgin of Guadalupe. After clashes with the criollos and other townspeople the group disbanded. Hidalgo was captured on 21 March 1811, and executed on 30 July.

Hidalgo's rebellion was the beginning of what would become the Mexican War of Independence. Although he was unsuccessful in his original aim, Hidalgo's efforts were followed by those of José María Morelos and Agustín de Iturbide who brought down the colonial governments of Spain in Mexico. Hidalgo is considered the Father of the Nation of Mexico.

More about Hidalgo you can read on Wikipedia.

Mexico 100 pesos, 1981

Venustiano Carranza de la Garza, (December 28, 1859 – May 21, 1920) was one of the leaders of the Mexican Revolution. He ultimately became President of Mexico following the overthrow of the dictatorial Huerta regime in the summer of 1914 and during his administration the current constitution of Mexico was drafted. He was assassinated near the end of his term of office at the behest of a cabal of army generals resentful at his insistence that his successor be a civilian.

Mexico 20 pesos July 18, 1973