I was looking at some old photos from around 2000/2001 if I remember correctly and it shows 737s or A319/320s at CID and I believe MLI. I know now and for at least the last 3 years all United routes from CID and MLI have been on RJs. Does anyone remember the last time there was mainline service to/from CID and/or MLI?

I assume this mainline service was discontinued and switched to RJ service as a cost saving measure in the wake of 9/11, but I could be wrong. I know this is not a very important or urgent question, but I am just really curious and I am hoping someone out there can remember when this service was discontinued.