UFO interiors: Are there any good first-hand descriptions?

Besides Bob Lazar's account of the sports model, do any credible accounts of UFO interiors come to mind? I made this one for an indie RPG about alien abductions, but I'd like to create some more maps of different UFO interiors. This one includes a lot of the UFO tropes, like an exam room, control room, gravity amplifiers, cattle mutilation, etc. But I think it would be really cool to make a series of maps that are more specific and "accurate" to real encounters. If you have any suggestions, I...

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