Planting Tomatoes in September?

Can you start tomatoes in August, transplant in September, and get tomatoes in October in Maryland?

Our family garden has been producing quite a bit of tomatoes and beans.  About a month ago I decided to start some more tomato seeds -- Sub Arctic Plenty and 42 Day varieties.  Sub Arctic Plenty is supposed to ripen 40 days after transplant and 42 Day is supposed to produce ripe fruit 40-50 days after transplant.  About a week ago I transplanted a bunch of each variety into both 10 gallon and 2 gallon pots, along with some Dinosaur kale and Dwarf Blue Curled kale.  We'll see if we get tomatoes before the first frost which normally occurs mid-late October.  I'll be moving a few of the tomato plants into one of my heated greenhouses at the first threat of frost.