MHC Blog Post about Dr. Petra Bonilla Toral de Colunga, https://library.tmc.edu/mcgovern/2022/02/25/doctora-petra-bonilla-toral-de-colunga/
See more at Texas State Board of Medical Examiners Records.
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Texas State Board of Medical Examiners, "Dr. Petra Bonilla Toral De Colunga's Applicaton for Reciprocal Endorsement By The Texas State Board of Medical Examiners" (1866). Library Exhibit Images. 94.