Does anyone have access to the house magazine published by the Seneca Shipyard which was operated by the Chicago Bridge and Iron Company? The magazine was called 'Our Prairie Shipyard' and there was a more substantial historical version published just after the War also called 'Our Prairie Shipyard'. Note: I'm researching LST229 which was built at Seneca in 1943.
Maybe try the Seneca Historical Guild or the LaSalle County Historical Society. They may or may not have a collection, but they probably would be able to let you know where to find what you are looking for.
You can also check here Offer #1 - OUR PRAIRIE SHIPYARD The Illinois LST Association has been very fortunate in being able to able to obtain manyadditional duplications of "Our Prairie Shipyard". Published by the Chicago Bridge and Iron Company after WWII ended, the book celebrates the construction of 157 LST's at their shipyard in Seneca, Illinois. If you sailed on a Seneca built LST this is a keepsake item you will not want to miss. If you sailed on any of the other 900 LST's the publication will take you back to the time when your LST was built. The book is filled with Official Navy photos of the construction, and launching of LST's, built on what once was a cornfield along the banks of the Illinois River We have sufficient books to handle all requests. Send your requests to: Illinois LST Association 6144 West 79th St. Burbank, IL 60459 We do ask that you send a donation to our scholarship fund along with your request. Please make your checks payable to the Illinois LST Association Scholarship Fund. We also ask that you write "Prairie Shipyard" in the lower right hand corner of your envelope. This came from this site http://www.abiz4me.com/lst.html