Updated results of the experiment E94-107 hypernuclear spectroscopy in Hall A of the Thomas Jefferson National Accelerator Facility (Jefferson Lab), are presented. The experiment provides high resolution spectra of excitation energy for 12B_Lambda, 16N_Lambda, and 9Li_Lambda hypernuclei obtained by electroproduction of strangeness. A new theoretical calculation for 12B_Lambda, final results for 16N_Lambda, and discussion of the preliminary results of 9Li_Lambda are reported.