You searched for: Collections Baker Street Irregulars mss., 1923-2021 Remove constraint Collections: Baker Street Irregulars mss., 1923-2021 Series Large and Medium size prints and negatives. Subseries: Biographical. Subseries: Hacienda Tetlapayac, Hidalgo State, May - August 1931. Remove constraint Series: Large and Medium size prints and negatives. Subseries: Biographical. Subseries: Hacienda Tetlapayac, Hidalgo State, May - August 1931.