Peggy, I don't doubt that you will knock down some brick walls! I've knocked down several specifically with the land records in the catalog.
Something I learned only after the finding the catalog, so FYI also: when there is a camera icon, you can view the image from home. When there is something that looks like an old film reel, it is viewable I guess only in the original source or else with a trip to the Family History Library in Salt Lake City, where it would be on film.
When you see a camera icon with a "key" over it, that means you cannot view it from home, but you also needn't travel all the way to the original source or to Utah. Those images are viewable at any affiliate facility to the Family History Library -- these include Family History Centers, affiliate libraries of the Family History Library (I've been trying to get my local public library to become one!), and a few other sites such as the beautiful NEHGS library in Boston.
Most places in America are near an FHC -- my closest is about 50 miles from me. They've been closed for COVID, but mine just emailed me two days ago to tell me that they've opened for appointments and to see if I want one. Yes please! I have a running list of items to look at on my next trip to the FHC, and I include the Film # to make it super easy to find while I'm at the FHC.