Thanks bbbluz. Have tried all on the link you provided. Did improve a couple of problems, but the darned "Bookmarks", toolbar and tabs remain teenie, tiny and barely readable. I'm using FF 38.0.1 and OS X Yosemite 10.10.3.

Amen to that, Elmer! There were certainly a lot of suggestions I found that I needed to weed out what might be useful and what not, but felt I was in over my head. However, desperation can make us try things that maybe we shouldn't. The return of the blurring of every picture in my computer, in addition to the ever-present font blurring, may ironically have been brought on by something I did, trying to fix things. By the way, I didn't get back to answering you before, but my computer is about 4 years old, whereas the tricky monitor may be 7 or 8. I know the monitor's age because when we bought my present PC, my husband (not needing the space I do for music and pictures) got my old one, bought in 2010, but I kept the monitor that had come with it. We got a new, much bigger one for him for his bad vision. I wonder, what is the average life of a hard-worked monitor? Andi: I am so pleased that my troubles ended up helping you solve yours! My husband has twisted eye nerves and glaucoma and his sight has been slowly declining for years; he uses a magnifying glass to read books now. I am so sorry you are suffering from macular degeneration; that is a horrible thing to have to cope with, and I hope you will be able to keep enjoying your computer for a long time to come. Rose: No worry, I can see the screen just fine now, without the distraction of those shadows. In youth, I had better than 20/20 vision. Now it's hard to thread needles and I need glasses to read the running news notices at the bottom of the TV (admittedly, it is the smallest Samsung we could find), as well as to drive and read signs, but not for computer things... Though if you see me at a distance on the street or in a store, don't be surprised if I don't recognize you until we get closer! Having reached 80, I am not complaining, so long as the rheumatism allows me to keep walking. A shout-out to everyone here who is standing up against the indignities and inconveniences of age! It was encouraging to know there are some other elderlies, as a foreign friend once called us, still keeping their joy in life. And to any young whippersnappers, you'd better hope you will be where we are one day, indignities and all, the alternative being.....you know! :-]

Found something. Futura, a mid century font

Bpath, i think you may have hit on something. I found a font similar to my first choice and just borrwed the capital M from that font. I can do the same with a couple of other letters that don’t do the trick.