Complex sentence: LDS General Authorities (the spiritual leaders of the church) wrote little of the "Encyclopedia"; indeed, most contributors from church hierarchy were only tapped to write articles on the publications or institutions they directly administered or lead.
Split into simpler sentences: LDS General Authorities (the spiritual leaders of the church) therefore wrote little of the "Encyclopedia". Indeed, most contributors from church hierarchy were only tapped to write articles on the publications or institutions they directly administer or lead.