Local historian Carol Jensen is once again asking Press readers to help her peer into far East County’s past. This month’s postcard history mystery features a white house with an elaborate front porch and tidy landscaping. All the front of the card says is “Residence, Oakley, Cal.”

“The postcard doesn’t feature any people, but that doesn’t make it less of a mystery,” said Jensen. “I want to know where this house is or was and who lived there.”

As with last month’s mystery, while the photo is worth a thousand words, it’s the message on the back that reveals the greatest mystery. The message reads: “Dear Carrie: How are you spending this glorious vacation? I spent one week in Merced. July 1st Lois and I leave S.F. (San Francisco) for Tahoe to be gone for ten days. Had a talk with Mattie over the phone yesterday.” The message is signed by A. O’H. and was sent on July 24, 1911 to Miss Carrie Powell at 224 Lester St. in Oakland.

Jensen is asking readers to identify the house’s address and disclose the full name of A. O’H. She’s also interested in knowing the identity of Lois and Mattie and how all of the girls knew each other.

The person who provides the most information about this card will win a year-long membership to the Contra Costa County Historical Society.

Jensen has an extensive collection of historical photo postcards. Each month the Press will feature a new history mystery postcard and ask readers to help solve the puzzles of memories frozen in time. Our first history mystery, featuring a photo postcard of Byron School sent in 1901, which ran last month, was solved within a week of publication.

Those with information about this postcard should e-mail Jensen at historian@byronhotsprings.com.