Sadly, the Boston Pops are ignoring Anderson's centennial. Nothing on this year's schedule. The Pops concert tonight: a Judy Garland tribute.
The Boston Pops did in fact celebrate the Anderson Centennial with performances of the composer’s music on June 3 and 4, 2008 at Symphony Hall. Although these two concerts included works by other composers, no major orchestras in the US would typically devote an entire concert to one composer. I was in Boston at the time and was able to get tickets.
For details see: www.leroyanderson.com/leroy-anderson-in-cambridge.htm