Mix the crumbs and butter to-gether and put all but half cup into a 8x8 pan and cook 10-15 min. in moderate oven. In saucepan put the strawberries, sugar and lemon juice, heat until hot and add the jello, bring to boil and then take from stove and cool. Whip half pt. whipping cream until stiff and add half to jello mixture. Pour over graham wafer base. To rest of cream add some sugar and vanilla and spread over the other mixture, sprinkle the reserved crumbs on top and chill in refrigerator. Very Good.