Penobscot Marine Museum will host the Maine 2013 Antique Paper Show: Postcards & Paper Collectibles Saturday, June 29, from 8:30 a.m. to 3:30 p.m. at Union Hall, 1 Union St. The show will feature more than a dozen exhibitors and vendors with thousands of vintage postcards, old maps, paper ephemera and historic photographs.

At the Paper Show, exhibitors will buy, sell and trade old postcards, maps, calendars and other paper collectables. Free appraisals will be offered from 1 to 3 p.m.

Penobscot Marine Museum will be displaying postcards and photo prints from its extensive collection of the Eastern Illustrating and Publishing Company, an early 20th-century Belfast postcard publisher.

“The area’s tourists in the early 20th century were prodigious correspondents. Writing and sending postcards and letters to friends and relatives back home was an almost daily ritual for summer visitors,” said Kevin Johnson, the museum’s photography archivist.

Postcard collecting has been a popular hobby since they were introduced to the world in the early 1900s. Collectors, known as deltiologists, often focus their collections on specific geographic locations or subjects such as post offices or train stations. Cards that sold two for 5 cents a hundred years ago are now worth hundreds of dollars in some instances, depending on their rarity or, more importantly, the desire of a collector to own it.

Admission to the show is $2; if one also visits the museum, $2 will be deducted from the admission price. For more information, call 548-2529, ext. 210 or visit PenobscotMarineMuseum.org.

Courier Publications’ A&E Editor Dagney C. Ernest can be reached at (207) 594-4401, ext. 115 or dernest@courierpublicationsllc.com.