There is no producer's name on the card-front or back.
The card has no copyright markings on it as can be seen in the links above.
United States Copyright Office page 2 "Visually Perceptible Copies The notice for visually perceptible copies should contain all three elements described below. They should appear together or in close proximity on the copies.
2 The year of first publication. If the work is a derivative work or a compilation incorporating previously published material, the year date of first publication of the derivative work or compilation is sufficient. Examples of derivative works are translations or dramatizations; an example of a compilation is an anthology. The year may be omitted when a pictorial, graphic, or sculptural work, with accompanying textual matter, if any, is reproduced in or on greeting cards, postcards, stationery, jewelry, dolls, toys, or useful articles.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
Card has been auto corrected and cropped. The front had cancellation marks which were removed as much as possible. Previous upload was to establish dating and that there are no copyright marks on it.
{{Information |Description=Postcard depiction of an entrance to Hersheypark in 1927. |Source=[http://www.ebay.com/itm/HERSHEY-PARK-PA-Entrance-Vintage-1927-Postcard-Old-PC-/330621684147?pt=LH_DefaultDomain_0&hash=item4cfa9689b3#ht_1811wt_1164 eBay item...
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.