Searching for articles on custom knobs

Do you see that little “Search” box to the right?  All of the custom wood guitar knobs shown here have serial numbers, up to 287 at this point.  And except for one cited as an “unknown” (white) wood, most all have the woods used identified.  If you type the serial number or wood into the Search box, a short written article on that knob may come up.  But not all the knobs have articles here.