This was the first hit from a google search of "boston lager clone." Not sure if it's in the ballpark or not:
Sam Adams Boston Lager Clone Brew Recipe (extract)
This is the extract version of Boston Lager. I never made this but the calculations are correct and sould taste very close.
# 1/2 lb. 60 crystal
# 4 lb. light malt extract
# 2 1/2 lb. light DME
# 2 oz. Tettnanger(bittering)
# 1/2 oz. Tettnanger(aroma)
# 1/4 oz. Hallerttau Mittlefruh(flavor)
# 1/4 oz. Hallerttau Mittlefruh(dry)
# 1 tsp. Irish Moss
# 1 1/4 cup xtra light DME(priming)
# Wyeast 2206 Bavarian Lager yeast
Steep crystal in 1/2 gallon of 150f water for 20 min.Strain the grain and run 1/2 gallon of 150f water over the grains.Add enough water to get 1 1/2 gallons. Bring to a boil and remove from jeat. Add the Xtract,light DME, and bittering hops. Bring water to 2 1/2 gallond and boil for 45 min.Add flavor hops and irish moss. Boil for 13 min. and add the aroma hops.Boil for 2 more min. Remove from stove, cool,place in fermentor,and add enough water to make 5 gallons.Pitch yeast and ferment cool(55f).Rack to secondary and add the dry hops.
# Primary for 10 days@55.