Sherman attended her first major exhibition at the Panama Pacific International Exposition (PPIE) held in San Francisco in 1915. It was around this time that she greatly increased the amount of work she produced, cutting as many silhouettes as she possibly could. She also began keeping guest books to document the signatures of the subjects she cut. There are six known surviving guest books, all in private collections. The one used at the PPIE was sold at auction in May 2006.