Mav-- over in the Silver Pig thread replies and states:
My trusty old Chambers ...

which is perfectly understandable -- My Chambers is my favorite dictionary too, and i too, am liable to say, My Chambers.. and as i recall, Holmes, too, made a reference to checking out a word in My Chambers...(or was it Inspector Morse-of the Oxford Police (UK/PBS mystery series?)

Most times, when citing the OED-- it is just the -- the OED-- and Mav points out the AHD and other have quoted the M-W 10th... but Chambers is never the Chambers, it is always My Chambers!

The Bronx is an other odd man out-- all the other boroughs/counties of NY are just Queens, Kings, Manhattan, Richmond...) including upstate counties, Sullivan, Westchester, Orange, etc..

any other proper names of place or things that always take a special article?