This capability proved crucial for disentangling different surface states in topological insulators. Carding completed the disentangling process, creating rolls of wool called rovings. He concentrated on disentangling the iconography of the sculptures and reliefs he was describing. A prototype of Edwin Craye appears in the Reggie Pepper story "Disentangling Old Percy". Disentangling the family's business interests took nearly a decade. An early version of the character appeared in the Reggie Pepper story, "Disentangling Old Percy". Disentangling these two possibilities requires a different design (see below for an example).