How many pixels to use for scanning newspaper article with photos

I recently purchased an EPSON Perfection V600 Photo scanner to make CDs of family stories, newspaper articles, pictures, film, and slides. It comes with Adobe Photoshop Elements 9. I was hoping to restore old photos. I have several old newspaper articles that were written by an aunt who was a freelance writer for various publications. The articles also had photos. They have aged and have a yellow tint.
I have tried to scan them, but the photos look grainy and the background is still yellow. My Brother printer does better than this. I am trying to put together a booklet with the history of our family so future generations will be able to read and see their heritage. This is a very important project to me, but I think I am not capable of doing this.
My question today is how many pixels and dpi do I select? Or is that what is causing the distortion? It looks kind of like the glass windows in your car look like with polarized glasses.
Thank you for your help

I don't think the issue is so much pixel size and dpi, but more the scanner settings. I downloaded the user manual for your scanner. There is a Descreen setting which most scanner have. The manual says about Descreen: "Removes the rippled pattern that can appear in subtly-shaded image areas, such as in skin tones. Also improves results when scanning magazine or newspaper images which include screening in their original print processes. This setting is available only when the Image Type is set to Color or Grayscale. The results of descreening do not appear in the preview, only in your scanned image."
The manual also mentions a Newspaper setting: "when you select Newspaper as the Document Type setting, the Image Type is set to Black&White". However, if the yellow is converted to gray there are ways in PSE to remove the gray. Even if you scan the newspaper in color, there are ways in PSE to remove the yellow.
If you try the above and are not happy with the results, you might post an example of the scanned picture and reader of the forum can offer suggestions to improve it.

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