That did what I was asking for but not what I actually needed. But I did get a clue in the tutorial link you sent that indicated that I was missing something which was the simple selection in Genesis Theme Settings / Content Archives —choose “Numeric”.
You should include an IQ test in your login form that would automatically redirect these sorts of questions to a “Read the Instructions” page.
Actually, it would be cool to have a method specific for the Portfolio pages but that really isn’t necessary for this particular project. The mentioned selection takes care of all my immediate needs. I also searched for the answer but didn’t come across this site, so thanks for that resource as well.
Thanks for your help.