You should contact Doug Oster at the Post-Gazette. He writes a garden
column, and gives away heirloom seeds, and tomato plants. I think he will be
giving some away in North Park on June 4 or 5, but if you check the PG
archives there should be something in there about it. I got some seeds from
him last year, and great some really large heirloom tomatos. He receieved
the seeds from someone in, I think, Moon Township.