It saddens me to pass on that Professor Donald Horward died yesterday. He was the head of the Institute of Napoleon and the French Revolution at Florida State University. Professor Horward was a prolific author with over 54 works in 167 publications in 5 languages. His book Napoleon and Iberia: The Twin Sieges of Ciudad Rodrigo and Almeida, 1810 was the book that got me interested in the Peninsular War. He was one of the few people I know of that had access to the André Masséna Family Archives. His papers are now held by the Florida State University Library.
About 18 months ago I had the pleasure of talking with him on the phone about the sources he used for the above. He was very generous with his time and was happy to point me in the direction of sources I had not known about.