From builder website:
The First Lutheran Church of Monmouth, Illinois has a long history beginning in the year 1853 although not formally organizing until 1868. The Swedish church celebrated its 40th anniversary in 1908 with the installation of the Marshall-Bennett pipe organ and another long history began.

In the ensuing 84 years, the Bennett organ has been moved from a smaller building, remodeled numerous times, struck by lightning and placed at different locations in the church. The most recent organ project took 10 years. Eventually the Levsen Organ Company of Buffalo, Iowa was contracted to completely rebuild the Bennett in 1989.

The Bennett suffered from tuning problems, lack of proper ensembles for congregational singing, noisy action, design problems, a failing of plastic components installed in a rebuilding done during the 60's, deteriorating wiring that posed a fire hazard and erratic pre-set pistons.

While the organ was scheduled for an almost total rebuild, some usable pipe work remained and round oak embellishments from the original woodwork were found in the attic. The lovely old oak was cleaned missing parts replaced and the pieces incorporated in the design for the new casework.

The 30-rank [sic] Monmouth organ required all new wind chests, supplementary ranks and console. Wind pressures were lowered for the new organ to speak better, cleaner and more precisely. A state of the art digital operating system executes the organist's commands at the speed of light on fiber optic cables. Ten levels of memory are available to the organist and a transposer is included.

The June 9, 1991, dedication was played by Master of Music, Carl Swanson of Los Angeles, California.