Cattleya walkeriana has been chosen as the project plant for 2016.
I have added the listing of sites where popular Cattleya can be found. Feel free to add other links!
Cattleya walkeriana
Elsner Orchideen -
Elsner Orchideen - Cattleya Naturformen Seite 8
Paramount has the C. walkeriana and the Leptotes bicolor:
Species
Cattleya walkeriana: Andy's Orchids, Gold Country,
Orchids, H&R, Jewell Orchids, Hausermann's, Odom's, SBOE, Seattle Orchids, Orchids Limited
Here is the link to one of Catwalker808's posts about the C. walkeriana:
C walkeriana - Tips for Growing & Blooming