Do you have an orchid society near you? Older members might have this. I've seen huge specimens in larger orchid shows. I think it's survived in a lot of collections because it's an easy to grow plant that flowers spectacularly.
__________________ May the bridges I've burned light my way.
I have a couple of spare divisions of it. I find it to be a messy grower, very phototropic and I'm an indoor grower. Blooms several times per year, though. One division is in bud right now. PM me if you're interested.