I have had a member request me sending photos from a book that I marked as RWAP.    I took the photos from my phone and the photos are saved to my Google Photos.  Now how do I post the photos in a PM?

you can't post them in a PM, You can post them on the internet somewhere and send them a link, or ask for their email and send them in an email.

I already asked about the email and he felt uncomfortable with that.

That's so weird, wasn't his name and address on the return address of the book he sent to you? Email is so much more anonymous.

In any case, if he doesn't want to email, then you would have to post them somewhere to a public website he can access, like Flickr or different site like that, and then send him  a link.

I post the photos to photobucket and send links to the photos in a PM.

Yes -- photo bucket and flickr are both free sites where you can post the image, then send the web address in a PM.

Thank you everyone.  I sent the link from photobucket.  It did not help, but learned something new.