The idea of braille came from a talk with Rhona Kenneally.  When I put forth that I wanted to put the story "Cities and Eyes 4" (from Calvino's Invisible Cities) on the outer surface of my framing device, she suggested that I push that idea and introduce the idea of texture/touch (I was planning on photocopying the story and pasting it on the outer surface, perhaps underneath a sheet of clear plexiglass). Thus, the idea of braille was introduced and after some thought, I felt that it was pertinent to my design and it helped to complement my idea of the framing device.  I had some trouble explaining how I saw the link-up between the braille on the outside with the experience of my framing device to other people so that resistance really pushed me to clearly formulate my argument and justify my reasoning for the braille.

So the braille on the exterior surface of my boxy framing device was to push reinforce the idea that it was only through my framing device was the city revealed in new and surprising views (See Cities and Eyes 4 for the complete jist).  In handling my framing device, the viewer would become aware of the sense of touch such that of a blind person who sense of touch is totally relegated to that of touch (it is their main mean to navigate through the world) and that when they look through my framing device they can only see what is permitted through the framing device and the rest of the world becoems invisible to them.  Yet they are connected to the rest of the world (i.e. outside my framing device) through the braille, by their sense of touch,  similar to that of a blind person. Plus the sentence itself "All the rest of the city is invisible" is to suggest that the viewer is indeed blind to the beauties of the city.

So I went to Montreal Association for the Blind for more information on Braille and to ask them if they could transcribe one sentence for me into Braille - I wasn't really making sense out of the photocopy of braille. Here are the notes from the very informative session with Eleanor Diamond of Montreal Association of the Blind (MAB). As well, this website gives a brief history and use of braille:
http://www.acb.org/Resources/braille.html

Here is an image of the braille transcript for my sentence: All the rest of the city is invisible.  The top line contains punctuation: the first braille 6-dot grouping (i.e. letter) indicates that the following braille 6-dot grouping/ letter is capitalized.  And the last braille 6-dot grouping symbolizes the period, end of the sentence.  The second line does not include the first and last braille 6-dot grouping - so no punctuation.  I followed the second line, so in the braille sentence that I put on my framing device, the first letter "A" is not capitalized and there is no period at the end.