I was able to get both sides of the book cabinet from one length of old-growth Honduras Mahogany. This board has attractive figure. The board was rough cut with jig saw, then examined for twist. One piece was true enough to run through the drum sander (width too wide for power planer). The other section required using the jointer plane to take down the high (opposite) corners, then it was also run through the drum sander.
Some cracks and voids were filled with West Systems epoxy with color added. I wiped denatured alcohol on one section just to tease myself with the color to come once the cabinet is completed. Looks promising.