look on the net and try these nurseries- fairweather gardens, forest farm, roslyn nurseries. for new eng.
nurseries, try weston gdns, russell's, broken arrow, mahoney's,katsura gardens. this should be pretty easy to find.

Oh Yeah, I saw one at Mahoney's $ 350.00 !!!!
I actually bought 2 small Harry Lauders and a Halle's giant Filbert ( Burn't Ridge Nurseries-By Mail Very inexpensive.) And tried grafting them this spring. Sadly, It didn't take. I will try again just before they break dormancy next spring. Meanwhile, What should I Find walking through Home Depot last week? A contorta Standard For 70.00 Bucks! Just a bit smaller than those at Mahoney's! ( must have been a mistake, Same price as regular Harry Lauder bush!) I toted it home and am tickled Pink!!!! :^) Lee