Try below from Victory seeds, or others that may carry
same. In eastcoast 'sandy' central Fla, I liked the
Pointsett 76, type. Both are open pollinanted, and NO
mention of Heirloom status, sorry... Plus not certain
on the pickler either.

Marketmore 76
70 days  Bred by Dr. Henry M. Munger of Cornell University and released in 1976. The fruit are eight to nine inches long and dark green in color. They have a sweet mild flavor and are very disease resistant (downy mildew, powdery mildew, scab, cucumber mosaic virus). Does well in cool climates.
During our 2003 growing season we had some extremely hot (100F) and dry weather here in Oregon. The cucumber in the picture was picked in the midst of our heat wave and was not bitter at all. It remained of excellent flavor.

good to know about the Marketmore as that is one cuke type I ordered thru Baker Creek! (The other being Delikatasse, sounded good!)

I heard Diva was a good cucumber, but I do not know if it is a heirloom or not (I'm new to gardening, just learning!)

Thanks so much for the info flarick! That is good to know it does well in both cold and hot temps- our weather is just like that too. Going to look up the first one you mentioned...

-lscully02, Gardenweb is just a wealth of information, so I am sure you will become a pro gardener in no time ;-)
CMK