It is doubtful that anyone in the 1800s would have dreamed that a device used as a telephone also could be used as a camera. As time machines go, the camera is a pretty good one. Visit Mendocino’s Kelley House Museum this summer and experience the early days of the Mendocino Coast through the eyes of some of its leading photographers at the new exhibit, “Framing History: Worth a Thousand Words,” May 26 through July 31. You will also see artifacts like an Eastman View Camera No. 2 from the early 20th century, and equipment used by A.O. Carpenter on loan from the Grace Hudson Museum.