The Frances Lehman Loeb Art Center at Vassar College, New York, has acquired three works by Yllanes including a rediscovered self portrait gouache on paper. This vibrant work surfaced from a private collection following Ben Elwes Fine Art's exhibition and the LAW talk on Yllanes.

T. Barton Thurber, The Anne Hendricks Bass Director and Lecturer in Art, refers to this work: "I've had a number of people examine the artist's self-portrait, and everyone has been struck by its simplicity, boldness, and brightness. He certainly has the fierce look of an artist-revolutionary in the mould of Los Tres Grandes!"

Other works acquired by the Frances Lehman Loeb Art Center, Vassar College are Sombra Eterna of 1941, chosen for its mining references, and Skull and Llama, representative of Yllanes's use of indigenous motifs and Bolivian national identity.