"Mooring at Maple Bridge at Night" by Zhang Ji in cursive script.
Signed: Jiaxu Dong Beixi.
The second picture is a red seal, with an idle seal on the top of the head: clouds forming in the chest.
The third picture, the red seal on the right side: Heyang Zhou family. The white seal on the left: the seal of Beixi.
Judging from the signature and seal, the author is Zhou Beixi.
Zhou Beixi (1913-2003) was a native of Hechuan, Chongqing. He is good at painting landscapes and animals, and is famous for his paintings of monkeys. He created his own calligraphy "Jiaoteng style".
The price of calligraphy is not high, and genuine products are mostly between 2-5,000.