There is a pair of calligraphy, Zhang Qingtian's in Hebei. Is it valuable?

Zhang Qingtian (1923 ~ 2009) is under the pseudonym Canmang. Hebei Wuji people. ** * party member. 1937 graduated from Hebei No.9 Middle School. 65438-0939 Participated in revolutionary work and was a member of Chinese Writers Association. The calligraphy of the members of ........... Writers Association is worthless. Member of China Calligraphers Association.