That manual is great, but it must be pretty early. The biggest tube is a 22" and unless I missed something there were no reference to the whole armada of 21" tubes that dominated the mid and late 1950's. Hopefully we can dig up enought data to cover stuff from the point this one leaves off up till the mid 60s, so we will have reference the 21" B&W and up to round color tubes. That will cover most of the interesting stuff. I think it is great that PDFs are available for so much old equipment and manuals that would hardly be obtainable before the WWW came along.
