Name the Journal in which Mahatma Gandhi published regularly.

NCERT (2026-27): “6.1 Public voice and private scripts … Many letters are written to individuals, and are therefore personal, but they are also meant for the public. The language of the letters is often shaped by the awareness that they may one day be published. Conversely, the fear that a letter may get into print often prevents people from expressing their opinion freely in personal letters. Mahatma Gandhi regularly published in his journal, Harijan, letters that others wrote to him. Nehru edited a collection of letters written to him during the national movement and published A Bunch of Old Letters.…”