Tektronix 1969 catalog - 432 pages
Tektronix 1977 catalog - 278 pages
Tektronix 1982 catalog - 374 pages
Tektronix 1985 catalog - 470 pages
Tektronix 1989 catalog - 576 pages
Tektronix 1993 catalog - 540 pages
Tektronix 1997-98 catalog - 629 pages
That's a total of 3,299 pages of great detail about the products being sold between 1969 and 1998.
In addition, since products typically had a lifespan of ten or more years, you will find items designed in the early sixties thru those still being sold. If you are a seller of used Tektronics products, there is no better library of detail about them than these high quality catalogs that span the whole period from the sixties to now.
If you sell government surplus electronics made by Tektronix, you probably don't know the details about what they do, or you spend hours searching the internet for similar items. Well here is your answer. Get the nitty gritty details and describe your stuff accurately. That pulls in better bids and makes more $$ for you.