For the mirror universe counterpart, please see A. Jacobson (mirror).
A. Jacobson was a female operations division crewman serving aboard the Starfleet starship Enterprise NX-01 under Captain Jonathan Archer in 2161.
She was on duty in engineering during the rescue mission for Thy'lek Shran's daughter Talla.
She also attended the Federation Founding Ceremony on Earth in 2161 where she was seated in the first row, several seats next to Hoshi Sato, Travis Mayweather, and Malcolm Reed. (ENT: "These Are the Voyages...")
Jacobson was portrayed by background actress April Jacobson who received no credit for her appearance.
Her uniform, including a name tag, was sold off at the It's A Wrap! sale and auction on eBay. [1](X)