Complex sentence: The Carroll Library and thus, The Texas Collection received a remodeling job in late 1992 which allowed for further expansion of the collection which has developed into the ever-growing, premier research collection Aynesworth and other contributors envisioned.
Split into simpler sentences: The Carroll Library and thus, The Texas Collection received a remodeling job in late 1992 which allowed for further expansion of the collection. The expansion depicts a trend for The Texas Collection which has developed into the ever-growing, premier research collection Aynesworth and other contributors envisioned.