If you know, you know, I guess, but if you don’t, keep reading. Those often purple-inked papers were fresh from the ditto machine, or spirit duplicator.

If you know, you know, I guess, but if you don’t, keep reading. Those often purple-inked papers were fresh from the ditto machine, or spirit duplicator.

The rotary stencil duplicator, or mimeograph machine, is a predecessor to modern document reproduction devices, such as photocopiers, offset printers and scanners.

A memorial service for Albert Blake Dick III, 71, former president of A.B. Dick Co., will be held at 4 p.m. Tuesday in First Presbyterian Church of Lake Forest, 700 N. Sheridan Rd., in the suburb. … ...