In an effort to trim down my collection of 'stuff', I just came across my file of booking systems. Among them is material from Holiday of Magic (Ed Sparrow), Harry Mendoza, Chuck Windley, Colonel Seymour & Francis, Kenny Woodward, and some misc booking systems. Most of these were given to me by the performers themselves others by friends or clients. They are quite old, long before the days of computers and websites. They contain the brochures, letters and other promo material.
Do I toss them, keep them, (which means I'll trade for other things that I don't need), or, as a last resort donate them?

Anything you don't want, send it to me and it will sit on my shelves along with the other 50,000 pieces of instructions, advertising, letters and notebooks.
I use these for reference and let a few others use them for research, themselves.

Make sure they are obsolete first, just so they fit in with the other material on file Eventually I'll also find someone to care for the materials like I'm doing now.

It's difficult too decide what's obsolete. Most of the manuscripts are since the deal with subjects like crystal gazing, seances, and the like, but even so, I doubt if there will be all that many who would read any of it, unless they are researching for historic interest. I just prefer that it made available if anybody should be interested .
I can't tell what's obsolete among the the instruction sheets. There's probably some that lend themselves to being updated if anyone was interested, but one thins for sure, I'm not interested in keeping the stuff.
The brochures, business cards, etc, are a different story. There are collectors out there who would probably be interested in that material for their own collection. Meanwhile, my wife and I are talking about t a possible move to another location, and I don' want to schlep any more than I have to,