I wanted to touch on the topic of this sculptor again after working my way through the book on him “Christian Petersen remembered,” specifically I wanted to address the part of the book where the author mentions that the various terracotta works were “refurbished” and repaired or restored around the 1980s after “40 years of exposure to the harsh Iowa climate” there was deterioration to the terracotta she stated. I find that very puzzling that these terracotta panels and sculptures were showing deterioration after only 40 years! I have had hundreds of pieces of architectural terracotta from the 1880s and 1890s that were on building facades in New York City…