The following is a solution write-up that Eric Gasiorowski added to our Image 5 Solution Page in the text of two comments on June 14, 2018.  (Thanks, Eric!)  The write-up is being preserved as a wiki page, because comments sometimes get deleted and lost.  The text has been lightly edited for clarity, but is otherwise the same as what was posted in the comments.

Greetings all,

  Sorry about the long delay in posting, life happens.  I'll run through what we did when we made our run for the Chicago site.  Please bear in mind it's been a long time and this is my end of the story.

the verse...

Where M and B are set in stone
 As a group we were working on the verse, Mr. James had the first copy of the book and if memory serves me right had indicated that the he found the verse.  Asking family and friends had gleaned the statues in down town chicago in grant park.

and to congress, R is known
  A map that I purchased at Borders books of downtown Chicago showed that Congress ran right between the statues. Talking with a friend at the time, his father who worked for the railroad chimed in and stated that the railroad ran right by there.

L sits and left beyond his shoulder is the fair folk treasure holder
  When I took the train into the city and was standing on congress and next to the statues, I could easily see Lincoln sitting, so I walked out to the statue and looked left over his shoulder.

the end of 10x13 is your clue
  This is where things fell apart since counting out trees didn't add up and the next line caused me to focus in the wrong area (only about 20 ft from the final spot, lol).  I had veered off a literal interpretation which had led me to the statue and thought that fence was the spot.

fence and fixture central too
  I meant this to mean the fence line and the ornamental part of the fence to be the combined answer to the spot.  (Notice how I am making the theory match the verse, and not literally interpreting the verse.)

seek the sounds of rumble
  Standing in the area I could constantly hear the trains passing by.

brush
  Art institute was visible from where I stood.

and music hush
  I talked to a park employee who said that the Lincoln statue was the old band shell that was redone with the placement of the statue.  The clues — except the end of 10x13 — were literally lining up and very direct if you looked at them in the terms of writing of it was a sight and sound from where the treasure was buried. Mr. Wrobel took all our information and mailed what we had to Mr. Preiss, who saw immediatly what was wrong with the missing trees.  Our final trip back with that information locked in the verse and we recovered the treasure that fateful day.

  You'll notice many of what people think was important and how things were supposed to be interpreted to solve the puzzle don't line up with my story, and my breakdown of the verse is different from many peoples view of how it should be read.  It worked for me and the group, and ultimately I am part of a rare group of 5 people who can say "we solved it..."

Some ideas about going about solving verses and the pictures:
I am still of the mind all these years later, that Mr. Preiss stood on the final location of the Chicago treasure site, did a 360 and took in the sights and sounds and built the verse off of that.  The verse and the picture associated with it have what I consider the following information:

1. global information on the site (i.e., state, monument, important information to lock the state or city location)
2. area information on the site (clues that give what i call " the walk to the treasure," or how to walk the verse out to its completion)
3. buried area information ( the final 50 to 100 square feet of the hunt )

A final note about how and when this was solved: This was done pre-internet and pre-GPS.  Sounds crazy I know but I think personally looking back all these years that the intention of Mr. Preiss was to use a very direct interpretation of the verse to match the environmental sights and sounds.  Just a thought, lol.

P.S. I have been working on Milwaukee for almost 10 years off and on as time permits.  I believe I am within 50 square feet of completing it.  Who knows, this might be the year lol.

happy hunting all