Yes, it is “Wall [space or hyphen] Paper”. I assume that when it was written (1891) wallpaper was not so common a word that its usage was fixed.
Here is a link to the playlist.
And here are the 5 parts! You will notice, consulting the text, that I have split the videos into groupings of diary entries. Cool, huh?
Part 1
Part 2
Part 3
Part 4
Part 5