Mississippi River Map Nav Test

Wondering if anyone could give me a little input as to what to expect on this test. The Module number is 075 Mississippi Map Navigation. Have to take this for a Western Rivers Towing Endorsement and haven’t had any practice tests available through Lapware. I do have the Murphy books, but just looking though the 80 pages of questions under the Miss. River section doesn’t really narrow it down much. Thanks

Have you tried Captain Joe Lobo’s website yet?