Chinese landscape prints

So, I picked up this collection from an old family friend. She is an elderly lady and said that the prints came from her mom. She remembered them from childhood. I believe they are woodblock prints stamped onto a thick paper resembling posterboard.. There is actually a fourth print, but I included the original cover as not to lose the feel of a collectable set. Each print has some markings and calligraphy, but not printersignature. the style and form seems to match early landscape painting but I haven't identified the artists.