HELP- New to model A's

[Eskildsm]

I recently bought my second model A. Me and my wife are new to older car arena though we both have loved older cars. The model A coupe deluxe I bought for my wife has a significant oil leak coming from right behind the oil pan. I took some pictures but not sure you'll be able to see. Anyway I took the little 1/2 moon panel off that is right behind the oil pan and leak appears to be coming from where it looks like it runs into the tranny. I attached a couple of photos but not sure if you can access them. I have read some about the oil cap-- mine just slides right onto oil filler tube. Any help ???