[Library- Mezzanine Floor] [University of Pennsylvania] Electrical Plan (4/16/1947) Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A-M1
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[Library- Mezzanine Floor] [University of Pennsylvania] Sections (JBL, 3/28/1947) Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A-001.02
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[Library- Mezzanine Floor] [University of Pennsylvania] Sections (JBL, 3/28/1947) Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A-001
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[Library- Mezzanine Floor] [University of Pennsylvania] Interior Elevation of East Wall of Reading Room Showing New Second Floor (Furness, Evans and Co., 6/26/1922) Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.506
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[Library- Mezzanine Floor] [University of Pennsylvania] Longitudinal Section Thru Main Building Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.500
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[Library- Mezzanine Floor] [University of Pennsylvania] Cross Section Through Main Building Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.501
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[Library- Mezzanine Floor] [University of Pennsylvania] Basement Plan Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.502
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[Library- Mezzanine Floor] [University of Pennsylvania] Mezzanine (Entresol) Floor Plan Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.503
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[Library- Mezzanine Floor] [University of Pennsylvania] Second Floor Plan Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.504
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[Library- Mezzanine Floor] [University of Pennsylvania] First Floor Cret Collection, Athenaeum of Philadelphia. Local ID #: HHL548A.505
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