Exploration Of Giants Cave pt1 - Lineage 2 Reborn x1 Origins

Quest for lvls 51-74 repeatable reward are low A grade armor recipes.
If you open the parchments, they will turn into one of the following items:
Giants Doodle
Giants Love letter
Book: Giants Medical Science Chapters 1-5
Handbook: Giants Architecture Chapters 1-5
Blueprint: Giants Golem Chapters 1-5
Book: Basics of Giants Magic Chapters 1-5
The Giants Doodles and Loveletters cannot be traded in to Sobling and should be sold to the shop for 100 adena each,
You will randomly receive one of the two recipes for each set of books(Chapters 1,2,3,4 and 5) from the list below:
Book: Giants Medical Science Chapters 1-5
60% Recipe: Tallum Tunic
Blueprint: Giants Golem Chapters 1-5
60% Recipe: Dark Crystal BreastPlate
60% Recipe: Tallum Plate Armor
Book: Basics of Giants Magic Chapters 1-5
60% Recipe: Dark Crystal Gaiters
60% Recipe: Dark Crystalline Leggings
Handbook: Giants Architecture Chapters 1-5
60% Recipe: Dark Crystal Leather Armor
60% Recipe: Tallum Leather Armor
NOTE. While killing quest mobs, there is also the chance that you will earn a Mysterious Book in your quest inventory. Bring this to Sobling, who tells you to bring it to Warehouse Freigthman Cliff in Oren Town. He will translate it into the Ancient Language Dictionary: Intermediate Level. Bring this back to Sobling and you can activate the quest Exploration of Giants Cave part 2.