The Collaborative International Dictionary of English v.0.48:
Along \A*long"\ [AS. gelang owing to.] (Now heard only in the prep. phrase along of.) [1913 Webster] Along of, Along on, often shortened to Long of, prep. phr., owing to; on account of. [Obs. or Low. Eng.] "On me is not along thin evil fare." --Chaucer. "And all this is long of you." --Shak. "This increase of price is all along of the foreigners." --London Punch. [1913 Webster]