Hebrew micrography by Elijah Goldstein in Germany, 1898. The text says Jonah and the Midrash Yalkut on Jonah.
Hebrew ASCII from the 1200s. Or micrography, as it’s also called.
On this page, the scribe has identified himself as Eliezer son of Samuel by creating a calligram in the shape of the letters of his own name. The calligram (lines of text of unequal length written in parallel rows and forming a design) is a continuation of the text of the previous page concerning the laws of the holiday of Sukkot.
Hebrew micrography by Dayyan Aaron son of Judah Leib of Lissa, London, 1849. The text reads: Song of Songs.
Micrography by J. Sofer in France, ca 1910.
Popular postcards featuring the micrographic portraits of renowned rabbis were produced in Europe at the beginning of the twentieth century. The portrait of Rabbi Kahn, formed from a French text, is drawn from his writings.
Demonstrations of Most Complex ASCII Fluid by Yusuke Endoh 2012. The top one is a code calligram, where the code spells out Fluid and then turns itself fluid. Got an honorary mention in the Obfuscated C Code Competition.