This was brought to my attention by David Ring N1EA on the CW e-mail reflector. It's a Kindle book for $2.99 by Ken Krause. It is available on Amazon at https://www.amazon.com/gp/product/B01FH2MN3W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Here's the description as it appears on Amazon:
"This book describes the best way to clean Vibroplex and other telegraph keys. It includes buying tips, how to clean and repair telegraph keys, and much more. This short book will teach you the best ways to clean and repair your Vibroplex key without ruining it.
Many keys get ruined by improper cleaning techniques. Don't let this happen to your key. If you plan on cleaning your Vibroplex key this book is a must read before you begin.
You will learn how to make your own cleaning solution, how to blue steel, how to make minor repairs, how to clean bases and nameplates - everything you need to know to get the job done right the first time."
It looks worthwhile to have and the fact that Dave Ring endorsed it is good enough for me ... and the price is right!
72 de Larry W2LJ
QRP - When you care to send the very least!