ITC Stone Informal family (Linotype library) contains 6 fonts.
Sumner Stone worked together with Bob Ishi of Adobe to create the Stone family fonts, which appeared in 1987. Coincidentally, ishi is the Japanese word for stone, which precluded any squabbling about whose name the font would carry. The family consists of three types of fonts: a serif, a sans-serif and an informal style. The Stone fonts are very legible and create a modern, dynamic impression.