I need date stamps on photos already taken

SOURCE: How to date/time stamp photos?

No. with digital cameras there is no need to do so, as the date and all other details, such as what lens was used and exposure, etc. is stored in the image file as EXIF data.  If you need a date-stamp for legal purposes, I suggest you submit the original image, preferably RAW, from the camera.

SOURCE: Hello, I have a Coolpix S560 camera that I noticed

Not easily. Once the date stamp is on the picture, those pixels are the same as any other pixel. You can edit the photos using photo editing software, the same way you might replace one person's face with another's.

SOURCE: have photos taken with a

Not easily. Once the date stamp is on the picture, those pixels are the same as any other pixel. You can edit the photos using photo editing software, the same way you might replace one person's face with another's.

SOURCE: I have a Nikon D5000. Is there a way to edit out

Yes, but you can't fully recover what's underneath. Once those pixels were not recorded, they're gone.

Use any photo editing program. It's the same process as for editing out anything else undesirable in the photo.

SOURCE: Hello - I've spent the

Hi, Unfortunately once the photo's are taken there's no way to get rid of the date stamp on all of them at once. You can get a photo editing program and remove them that way but that does take a fair bit of work, if that's the route you want to go let me know and I can help you out with how to go about doing that based on your preferred photo editing program =)