1. Santiago Samper laboratory Publication: Produced: [November 1923] Subject(s): Education, MedicalSchools, MedicalColombia Archival Collection: The Alan Gregg Papers (Profiles in Science)
2. Histological laboratory and students in Colombia Publication: Produced: [1923?] Subject(s): Education, MedicalLaboratoriesColombia Archival Collection: The Alan Gregg Papers (Profiles in Science)
3. Alan Gregg in Magdalene River, Colombia Publication: Produced: [1923] Subject(s): Colombia Archival Collection: The Alan Gregg Papers (Profiles in Science)
