David Brauman corresponded with the Rebbe from the 1940s onward. In the earlier letters he was engaged in printing and distributing Chabad seforim; in the later ones he was involved in the communal life of Kfar Chabad and in Nshei uBnos Chabad. No reliable published biography is available; the summary below is drawn from the letters themselves.
Printing Chabad seforim. The earliest letters, from the Rebbe's years heading Kehot, give detailed instructions for printing and distributing Chabad books: quality control and distribution (IK 329, 339), the printing, binding and format of the Tzemach Tzedek's Piskei Dinim (IK 359, 369), title pages and printing details (IK 367), corrections and urgency in printing the Shulchan Aruch and the Piskei Dinim (IK 480), and the printing of Sdei Chemed (IK 348). The Rebbe also sent him maamarim and sichos to share, with the lesson of mutual respect for Lag BaOmer (IK 340, 483).
Kfar Chabad and Nshei uBnos Chabad. Later letters concern Kfar Chabad: the Rebbe's clear opinion on settling there, which need not be asked again (IK 3301), activity in Chassidus and Torah in the village (IK 4405), reporting in greater detail on Kfar Chabad (IK 4647), and planning ahead and assigning clear responsibility there (IK 5689). Several letters deal with Nshei uBnos Chabad: that the time had come to expect more of chassidim and of the women's organization (IK 3219), infusing its activities with chassidic warmth (IK 4002), involving more chassidim in supporting it (IK 4255), and supporting Jewish education together with its development (IK 4467).
See also: Jewish outreach – Publishing and spreading Torah books; Land of Israel – Kfar Chabad; Women – Nshei uBnos Chabad and women's organizations.