All of these are Korean.

The first image has written across the top(right to left), "Smile when you first greet someone in the morning." Down the left side it says "3,000 li, rivers (and something)". Basically a name for Korea. On the bottom it says "Jiri Mountain, Nakdong River" (A famous mountain range and river in Korea). On the left side it says "Land in the middle of the ocean," again, another way of saying "Korea." (I think).

The second image is one of the four Confucian classics, "Doctrine of the Mean,"

images 3-5, don't know /practice book (I think).

Image 6-7, from "Doctrine" (Image 6 opens with a great verse, "Mastery does not come from just knowing, but rather the combination of action and understanding."

I'll do what I can as someone familar with East Asian languages.

1. Is written in Korean (unfortunately I don't understand too much) but their are chinese characters running through the centre and the edges which I can guess at. On the right side it says 三千里江山 which appears to be a pseudonym for Korea. On the left 地中海 which could mean the "Mediterranean Sea." (That's what it means in modern Japanese anyway) Unfortunately I can't really read any more than that.

Number 4, 5, 6 and 7 are all in Chinese script as well.

I recommend maybe flicking this over to /r/translator as well to see if they can tell you what it is. I'm really curious myself. If you do post it on /r/translator mark it as Korean + Chinese.

EDIT: Some assumptions softened.

Hey, /r/whatisthisthing can also be helpful in these circumstances.