Pre-colonial period Pag-unlad ng Panggagamot sa Pilipinas (The Progress of Medicine in the Philippines) is a group of four large-scale paintings depicting healing practices in the Philippines from pre-colonial times to the modern period. Carlos Botong Francisco was commissioned in 1953 by Dr. Agerico Sison who was then the director of Philippine General Hospital (PGH) together with Dr. Eduardo Quisumbing of the National Museum, Dr. Florentino Herrera, Jr. and Dr. Constantino Manahan. These oil on canvas paintings measure 2.92 meters in height and 2.76 meters in width (9.71 ft x 8.92 ft) and were displayed at the main entrance hall of PGH for over five decades. Owing to its location, the artworks were in a state of "severe deterioration" at the beginning of the 21st century from exposure to heat, humidity, dirt, dust, smoke, insect stains, grime, termites and an oxidized synthetic resin used in an earlier restoration. These canvases were restored three times, the last was