Explanation:

David Brainerd Spooner was an American archaeologist and linguist. He was born at Vernon, Vermont. Spooner graduated from Stanford University in 1899. Spooner first went to Japan to the Prefectural College of Omi at Otsu, as well as the School of Foreign languages, in Tokyo, and the Imperial University. He was the first foreigner to graduate from the Imperial University with a Literature diploma. He later attended the British Government College at Benares (1901–02) and the Sanskrit College in Benares, (1902–03). Finally, through a Harvard fellowship, he received a Ph.D. from Frederick William University in Berlin, 1906.

In connection with Harsha Vardhan & Xuanzang, Kumar Bhaskar Varman visited ancient Buddhist University at Nalanda, where his seal along with fragmentary seal of Harsha was found by archeologist Dr. David B. Spooner along with his team during excavation in 1917-1918.