I got mine from Carter & Holmes. They still have it listed, with cultivation information.
Maxillaria Ben Berliner at Carter and Holmes Orchids
Be sure to scroll down and click on the tab Additional Information. This link will probably disappear when they sell out. I save Web pages for all the plants I buy so I can look at them later.
It is a cool to intermediate grower, cooler than in many homes. It likes high humidity, higher than in many homes. Successful growers posting here on Orchid Board have said they stand it in a dish of rain or reverse osmosis water all the time. It is not a high-light orchid.
Shorter leaves on orchids can mean higher light than previous, insufficient water or low humidity.
If you use the Search function in the top maroon menu, and enter the name, you can find previous posts on this plant.
Northern Wisconsin is so beautiful! By the land of Gitchi-Gumi, / By the shining Big Sea Waters,...