Dicc. Porrúa, 1971 (Pro Juárez, Miguel Agustín)
Encic. de Méx. (Pro Juárez, Miguel Agustín; b. Guadalupe, Zac.)
LC data base, 8-22-85 (hdg.: Pro Juárez, Miguel Agustín, 1891-1927; variants: Miguel Augustín Pro, padre Pro, Father Pro, Miguel Pro, Michael Pro)
LCCN 67-24026: Daughters of St. Paul. God's secret agent, 1967 (hdg.: Pro Juárez, Miguel Agustín, 1891-1927; usage: Michael Augustine Pro, S.J.)
Wikipedia 5 Nov. 2014 (Jos ̌Ramn̤ Miguel Agustn̕ Pro Jur̀ez also known as Blessed Miguel Pro (born January 13, 1891-executed November 23, 1927), was a Mexican Jesuit Catholic priest executed under the presidency of Plutarco Ela̕s Calles on trumped up charges)