Complex sentence: Sampson founded the "OEOCO PRESS" (One-Eye Opera Company) whose primary mission is to make limited edition letterpress books, bookbinding and unique (one-of-a-kind) books.
Split into simpler sentences: Sampson founded the "OEOCO PRESS" (One-Eye Opera Company). OEOCO's mission is to make limited edition, letterpress books, bookbinding and unique (one-of-a-kind) books.