1. Irwin Mark Jacobs portrait #3 Collection: Images from the Rare Book and Manuscript Collections Date: n.d. Format: Image Agent: Unknown
2. Irwin Mark Jacobs portrait #2 Collection: Images from the Rare Book and Manuscript Collections Date: n.d. Format: Image Agent: Unknown
3. Irwin Mark Jacobs portrait #4 Collection: Images from the Rare Book and Manuscript Collections Date: n.d. Format: Image Agent: Unknown
4. Cornell University Electrical Engineering: grad student, Prof. Simpson (Sam) Linke and Prof. Robert John Thomas Collection: Images from the Rare Book and Manuscript Collections Date: Unknown Format: Image Agent: Unknown
5. Cornell University Electrical Engineering: grad student, Prof. Simpson (Sam) Linke and Prof. Robert John Thomas Collection: Images from the Rare Book and Manuscript Collections Date: Unknown Format: Image Agent: Unknown
6. Irwin Mark Jacobs portrait #1 Collection: Images from the Rare Book and Manuscript Collections Format: Image Agent: Unknown
