Sweetbreads in the Lansing MI area?
As an occasional visitor to Lansing, I would love to hear of such a place - anyone? - but I suspect you might not find any there. You're most likely to find sweetbreads at a fine dining restaurant serving upscale, fairly innovative cuisine (basically, the same kind of place that serves foie gras, duck confit, etc). I don't know of anyplace in the Lansing area like that. And I mean no disrespect to the restaurants in Lansing by saying that. When I visited last year, I had an excellent seafood meal at Mitchell's Fish Market, and I've been to Beggars Banquet many times. I also checked the website for a place mentioned in another topic here, Dusty's Cellar, but it doesn't sound like that kind of place, either.
I am also familiar with the restaurants in Grand Rapids, an hour west, but I'm not sure you're going to find sweetbreads there, either. I checked the websites of the most likely places there - the two restaurants in the Amway Grand and Bistro Bella Vita - but no luck on sweetbreads. Gibson's might have had them, but alas, they closed down a couple of years ago.
So you may need to drive to Ann Arbor or the Detroit area to find them - and that's an area I'm not familiar with, maybe other Chowhounders here can help you out.
If you're ever traveling up to Traverse City, the outstanding Tapawingo in Ellsworth ( www.tapawingo.net ) shows them on the menu on their website, and the also excellent Rowe Inn nearby ( www.roweinn.com ) doesn't show them on their website, but that's another place that might.