I printed out an extra copy of Eimac's "Care & Feeding of Power Grid Tubes" on my laser printer. It's 164 pages & 3 hole punched to fit into a binder. If anyone is interested & doesn't want to print it out fm Eimac's website, it's available for $10 + postage fm zip code 92708. That should cover the cost of paper & toner cartridge. Tnx & 73, Bob, K6PF