Who is Abram Yelov from Meetings with Remarkable Men and what is their importance?

Abram Yelov sells books in Tiflis while Gurdjieff researches ancient literature. Yelov has a knack for picking up languages and knows books very well. He helps Gurdjieff find books of interest and becomes a good friend. One day, Yelov comments to Gurdjieff that a plaster cast manufacturer in town makes more money than all the booksellers put together. This prompts Gurdjieff to learn how to make plaster casts from the manufacturer and set up his own shop. Soon Gurdjieff, with Yelov working with the plaster casts too, corners the market. Yelov eventually becomes a wealthy book and stationary store owner, and after the Russian Revolution, he moves to North America where he again becomes successful.