<unk> <unk> <unk> <unk> <unk> <unk> <unk>
Panama Pacific International Exposition (PPIE) held in San Francisco in 1915. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ She also began keeping guest books to document the signatures of the subjects she cut.<unk> She also began keeping guest books to document the signatures of the subjects she cut.<unk> 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.<unk> There are six known surviving guest books, all in private collections. The one used at the PPIE was sold at auction in May 2006.