I used to know Mary Osborne back when I lived in Bakersfield, CA, and I own a rather rare Osborne prototype guitar that was made by the Osborne Guitar Company, run by her husband, Ralf Scaffidi. Mary had some input into the design of this guitar, and it shows. It is a nice playing guitar.
The reason for this comment is, some time back, I conducted a fairly thorough net-based research on this guitar, and as a direct and inevitable result, came across quite a bit of information on Mary Osborne. Your page shows almost nothing. She was an important and influential guitarist back in her heyday and I think your page should reflect this.
To acquaint you with Mary and her accomplishments in more detail I recommend that you take a look at a very good, yet reasonably brief, bio of Mary that was published in a past issue of Vintage Guitar magazine. It can be found at vintageguitar.com/8559/mary-osborne/
There is a lot of other stuff about Mary that a google search will turn up nowadays. Several of her recordings are available for listening on Youtube, although it appears that only one video in which Mary appears is generally available. That one is on Youtube also under a variety of titles, but it is "Art Ford's Jazz Party ( 09 18 1958 ) : Part 1 - The Roundtable" that has the most accurate title.