Question: What is the abbreviation of the passage discovered by Hudson and Button?
Sentence (from "Lama Passage"): It was named for a Hudson's Bay Company brigantine, the "Lama", under Captain McNeill (namesake of Port McNeill), which with another HBC vessel, the "Dryad" under Captain Kipling, brought building materials and stores from Fort Vancouver for the founding of Fort McLoughlin in 1833.
Relevant evidence: No