Guagua National Institute, extracted from The Tribune (8 July 1939, Page 16): https://trove.nla.gov.au/newspaper/article/249654447
The depicted Philippine architecture, 3D public art, or other freedom of panorama (FoP)-reliant work is in public domain because:
it is an architectural work completed prior to 15 December 1972;
it is a sculpture, monument, or other artistic work created before 15 December 1972 and was not registered, or an artistic work created before 1942 and which its copyright was not renewed; and/or
it is an architecture completed on or after 15 December 1972 or an another type of artistic work not meeting the second criterion, whose author or last-surviving author (e.g. the architect or sculptor) has been deceased for 50 years or more (therefore its copyright protection expired).
See Commons:Copyright rules by territory/Philippines#Public domain exceptions for FoP-reliant works for more information.
Images of copyrighted architecture and public art are normally not allowed on Wikimedia Commons, unless there is an applicable freedom of panorama (FoP) in the works' country of origin. However, there is no such exception in Republic Act No. 8293 (The Intellectual Property Code of the Philippines), see Commons:Copyright rules by territory/Philippines#Freedom of panorama for more information.
This work was first published in the Philippines and is now in the public domain because its copyright protection has expired by virtue of the Intellectual Property Code of the Philippines. The work meets one of the following criteria:
It is an anonymous or pseudonymous work and 50 years have passed since the year of its publication
It is an audiovisual or photographic work and 50 years have passed since the year of its publication
It is a work of applied art and 25 years have passed since the year of its publication
It is another kind of work, and 50 years have passed since the year of death of the author (or last-surviving author)
Important note: Works of foreign (non-U.S.) origin must be out of copyright or freely licensed in both their home country and the United States in order to be accepted on Commons. Works of Philippine origin that have entered the public domain in the U.S. due to certain circumstances (such as publication in noncompliance with U.S. copyright formalities) may have had their U.S. copyright restored under the Uruguay Round Agreements Act (URAA) if the work was under copyright in its country of origin on the date that the URAA took effect in that country. (For the Philippines, the URAA took effect on January 1, 1996.)
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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.