The archaic revival : speculations on psychedelic mushrooms, the Amazon, virtual reality, UFOs, evolution, Shamanism, the rebirth of the goddess, and the end of history / Terence McKenna ; illustrations by Satty. (OCLC #23976961)
The name of the publisher is printed on this piece as “HarperSanFrancisco”; so what does RDA say to do with CamelCase?
RDA A.16.5 on Capitalization of Other Corporate Bodies says to “capitalize the name of a … company”, but isn’t specific on what that means. The only spacing guidelines I could find described spacing in Initialisms and Acronyms, which is not the issue here.
With no further guidance, I’d fall back on one of RDA’s guiding principles: Representation. Specifically, the data describing a resource should reflect the resource’s representation of itself. In the MARC record, I would capitalize/space this as it appears on the piece:
264 _1 ǂa [San Francisco] : ǂb HarperSanFrancisco, ǂc