California Code
CHAPTER 5 - Warehouse Receipts and Bills of Lading: Negotiation and Transfer
Section 7506.

7506. The transferee of a negotiable tangible document of title has a specifically enforceable right to have its transferor supply any necessary indorsement, but the transfer becomes a negotiation only as of the time the indorsement is supplied.

(Repealed and added by Stats. 2006, Ch. 254, Sec. 49. Effective January 1, 2007.)