Little House on the Prairie boxed set 8 books vintage 1971 Laura Ingalls Wilder

This is a vintage 1971 boxed set of "Little House" books by Laura Ingalls Wilder; there are 8 books (set originally came with 9, but I do not have "The First Four Years"). Published by Harper & Row, these are their first print Harper Trophy editions with the yellow covers, and the box is also yellow. Numbered J1 through J8, titles included are: Little House in the Big Woods Little House on the Prairie Farmer Boy On the Banks of Plum Creek By the Shores of Silver Lake The Long Winter Little Town on the Prairie These Happy Golden Years Books are all in good condition with clean pages, no writing in them, and binding is good. Some of them show a little light wear and a some show virtually none at all, but none have any noteworthy flaws or issues.