Here's the caption The Library of Congress supplied:
Happy 9th Birthday, Flickr Commons! (LOC)The Commons launched exactly 9 years ago on January 16, 2008 with the Library of Congress account. We’re celebrating with a 10 candle cake for kittens– 9 lives and 1 to grow on.Just a glimpse of the unusual pictures you’ll find in the Commons where institutions from all over the world are sharing photos.-------------------The birthday cake. Photograph by Harry Whittier Frees, 1914.
Higher resolution image is available (Persistent URL): hdl.loc.gov/loc.pnp/ds.04028