RIMBEY, Alta. -- RCMP are trying to find relatives of a woman and a man who wrote letters to each other as far back as the 1940s.

Mounties found a bundle of the handwritten letters in a stolen vehicle in central Alberta.

The names on the envelopes are Margaret Clark and Mungo Clark, including one that shows he was a gunner who served in the 40th Battery, 11th Field Regiment, Canadian Army overseas.

RCMP Cpl. Laurel Scott said the letters are likely to be of sentimental value to someone.

"The hope is that somebody in the public knows -- if not who these people are -- who their family is and just contacts us and we get these letters reunited with whoever has been saving them for the past 70 years," Scott said Friday.

A military website shows the 11th Field Regiment served in Europe in the 1940s.

Some of the envelopes show addresses in Hamilton, Regina and Craik, Sask.

RCMP found the letters earlier this month on the backseat of a car in Rimbey along with other stolen property.

Scott said they have contacted the Canadian military for information on Mungo Clark, but have been told it could take time to sift through historical archives.

She said they hope some publicity about the letters will lead to tips from the public.

Until then RCMP will keep the letters safe in the hope they can be returned.

"We know that these are very special to somebody and we want to get them back," she said.

RCMP have charged Kaylyn Holmgren, 26, with 20 Criminal Code and traffic offences.