Mosallam recreated scenes from daily life in his lost Palestinian home that remained vivid in his mind since his expulsion from the village of Al-Dawayima in 1948.

Mosallam also produced extensive documentation of the Palestinian struggle and liberation movements in the form of painted reliefs.

He worked at the maintenance department of the Jordanian Air Force before joining the Palestine Liberation Organization (PLO) in the late 1960s, which sent him and his family to Libya.

Always, the woman appears stronger than the man as if the artist is going against the current, challenging the subordinate role of women in the Arab World.

Together with 33 Japanese artists, he participated in an exhibition in Tokyo about the Sabra and Shatila massacre, and many of his works have been employed internationally as posters, calendars and postcards.

In 2006, a publication on a selection of traditional works by Abdul Hay Mosallam was compiled by artist Ala Younis and printed in Amman.

Produced in Arabic, English and German, the publication also included images from the artist's archive, press clippings, traditional songs, as well as texts by Sally Bland and Ahmed Zreik.

2001 Exhibition catalog of "Made in Palestine", published by the Ineri Foundation with partnership of the Station Museum of Contemporary Art in Houston, Texas.