looking for salvage bluestone sidewalk flags

does anyone have any salvage bluestone sidewalk flags, or a source for them?  i need some for a couple of projects in the back yard and walkway.  must be 2 or more inches thick.  ideal dimensions are 3ft x 3ft or bigger, rectangular not irregular.  i am willing to pay a fair price for pieces in good condition.   email me directly at park DOT pl DOT brownstone AT gmail DOT com.  thank you!