Does CSH use spelling variant from LCSH?
All topical headings in CSH conform to LCSH spelling conventions, but with this exception: When a CSH heading has no equivalent in LCSH or is different from the authorized heading in LCSH, CSH may use Canadian spelling if this more accurately reflects Canadian usage of a term. e.g. Sarcee Indians (not Sarsi Indians) Notably, CSH includes cross-references from Canadian spelling to the preferred spelling to assist subject heading searches. And Canadian spelling is used within scope notes and instructions.