You can find a scanned version of Majma' 39 in Arabic on various online libraries and archives, such as:
: Addresses topics like the Imamate of Ali ibn Abi Talib, the infallibility of Imams, and the advent of Imam Mahdi. Accessibility
A: Tafsir al-Mizan by Allamah Tabatabai is a 20th-century work focusing on “al-Quran fi al-Quran” (Quran interpreting the Quran). Majma’ al-Bayan is classical (12th century) and focuses more on Hadith and linguistics. Volume 39 in both covers similar Quranic sections, but the style and depth differ significantly.
: Comprehensive interpretation incorporating both Sunni and Shi'a sources.
