How many sheets of documentation do you have?
And do you have an idea of how you would like the information preserved? Such as, will this be out for display, do you want it hung or preserved and saved to go to and take out at times?
I agree, a book would be the best method for preserving and collating the collection. You can start to preserve the collection on your own by purchasing an 'acid-free, archival storage box' and acid free paper. These can be ordered from shops such as A.I. Friedman: http://www.aifriedman.com/ or through a local framing shop in your area. You can keep the ephemera safe in the box, and place a piece of acid free paper between each item.
You can then 'shop' for a suitable and affordable archival bookbinder/conservator and discuss with them the scope of your project and budget.
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What information are you seeking on your collection?
I can refer you to the genealogy category here on justanswer.com if you like. My apologies, as the question posed above in your initial posting is asking how to best preserve the collection.
Ok will do.
There is no way that genealogy can place a value on your collection. That is an appraisal question. Those are two completely different fields of inquiry. Preservation of artifacts is still another field. Nora does appraisals and answers questions about conservation.
Genealogy can only attempt to find more information about Alexander G McNeill of Benton Co., Washington. What information about him or his family are you looking for? For instance, do you want to know his parents' names?
Thanks for any additional information.