Photo by Julian Wasser - (re-photographed from my copy of The Beach Boys: Silver Anniversary by John Milward. Published by Doubleday/Dolphin 1985).
eta: adding image descriptions as they've stopped showing for me on mousing over or clicking the alt button - was working ok earlier.
Top photo: Screengrab from a BBC documentary of a photograph of Dennis Wilson and Christine McVie, that looks like it's from a recording session - both are wearing headphones, and playing piano. Christine has a microphone in front of her. (Dennis & Christine are both wearing red tops, and there is some kind of red box with partly obscured white writing on it, and a white border, against the wall in the background).
The image has the BBC logo in the top left hand corner.
Bottom photo: Photo of two loose pages from a book on a yellow bedspread. The pages show a double page black & white photo of Christine McVie and Dennis Wilson looking at each other. Dennis is sat in a chair with his hands on a piano keyboard while Christine is leaning against the side of the piano lid with her arms crossed. The top of the piano has a decorative rug/throw plus a notebook, cigarette packet, ashtray and a fat candle on it. They are in a corner of a room decorated with a lamp/lamp shade, what could be a candle holder, various wall hangings, a white bookcase with various books, photos and ornaments on display including Japanese-esque facemasks, a photo of Christine singing and a copy of Fleetwood Mac's Rumours (barely visible, it shows up better in the original book's printing of the photo) , and a framed triptych of photos on the wall. There is an empty wicker chair next to Dennis, and a large plant in the far right corner.