Sharing a found tidbit from a pamphlet in my possession - Early Physicians of Vineland, NJ., pub 1903 by Vineland Historical and Antiquarian Society. Not interested in him myself, only have the location in common.
pg 25. "Lemuel H. AIKEN, M.D. from Norfolk, Ct., erected and opened the first drug store. Remained but a few months, selling out his unfinished building to Dr. J. R. ELTON, who completed it and conducted the business successfully for many years."

Vineland, according to the introduction, in 1861 was an almost unbroken tract of wilderness when one "Mr. Charles K. Landis proposed to establish his new colony." It began to attract those from the north seeking a place of milder climate. After the Civil War, it also attracted discharged soldiers seeking employment, new homes and a change of occupation.
No need to contact me. I have no other info on this person and don't desire any. Happy hunting !