B836.  Japanese Polearms by Knutsen.  1963.  Clothbound with a dust jacket, 7 1/2 x 10″, 271 pages in English.  This is a very thorough cover of the subject, with many illustrations and extensive text.  Not a lot has been written on polearms; katana and tachi get all the glory.  I doubt there can be many variations that aren’t included in this book.

Condition is excellent for the age: used but not in the least abused.  1 pound, 13 ounces.  $95.