Solution: Message in a Bottle
Answer: LETTER FROM HAWAII

Written by aki

To start, we might note that the flavor text tells us that we found these images are cutouts of a larger image. With some searching, we find that these are parts of stamps from around the world. (This can also be found relatively easily by searching the first set of images up.) After identifying a couple of the stamps, we find that every (picture) image in the first set matches with a (caption) image in the second set. In addition, the caption lines of each stamp are missing one letter from the corresponding original stamp.

We note that the first set of images are ordered alphabetically by their country of origin (which is also the order given in the table). The second set of images are ordered alphabetically by the line in their caption (ignoring numbers).

Country Original stamp Matching (error) caption Missing letter
Afghanistan Message in a Bottle solution image Afghanistan IVe JEUX OLY_PIQUES ASIATIQUES DJAKARTA 1962 M
Australia Message in a Bottle solution image Australia Ngukurr Wi Stad_ Bla Kantri I
Brazil Message in a Bottle solution image Brazil _OMENAGEM AO BRIGADEIRO EDUARDO GOMES H
Canada Message in a Bottle solution image Canada LADY'S S_IPPER L
Denmark Message in a Bottle solution image Denmark TREBENE_ SKALSTOL HANS J. WEGNER T
Finland Message in a Bottle solution image Finland LEEVI MAD_TOJA E
India Message in a Bottle solution image India STEGODON GANES_ A
Kazakhstan Message in a Bottle solution image Kazakhstan I want to wipe tea_ from every eye. R
Kenya Message in a Bottle solution image Kenya 14 LIFE BELOW _ATER W
Nigeria Message in a Bottle solution image Nigeria YANK_RI GAME RESERVE A
Singapore Message in a Bottle solution image Singapore N_LA I
Spain Message in a Bottle solution image Spain PRO FIDE ET A_TIBUS R
Sweden Message in a Bottle solution image Sweden _EGNÉR T
Turkey Message in a Bottle solution image Turkey 25. DÜNYA ÜNIVERSITELER KIŞ _YUNLARI ERZURUM 2011 O
UK Message in a Bottle solution image UK Nuclear pow_r E
USA Message in a Bottle solution image USA _ower F

Since we have one letter per country, we can place these letters on a map of the world as clued by “mapping” in the flavor text. Doing so, we can read off the answer to this puzzle, LETTER FROM HAWAII.

Message in a Bottle solution image World