He is known in the academic historical world for his research into the subject of American seamen "impressed" into the Royal Navy by the British before and during the War of 1812.
He also played an important role in the founding of the New Mexico Coronado Cuarto Centennial Commission, of which he served as its first president.
[1] Well known for his management style, Zimmerman's inauguration to the presidency was formally celebrated and was attended by New Mexico Governor Richard C. Dillon along with public school officials from across the state.
Zimmerman explained the effect of the practice of massive and prolonged British impressment on Anglo-American relations during the administrations of Presidents John Adams and Thomas Jefferson.
[a] His work reviews the legal and diplomatic debates surrounding the Royal Navy's impressment of American citizens since the War of 1812.
He joined Edgar Hewett, a longtime friend in a commemoration that lasted a year, which included the creation of Coronado State Monument at the ruins of Kuaua Pueblo, near Bernalillo.