the 1 , 3 and 5 are from Atlantis quest, in the lower district or something, there is a ghos that will need ask for lost artefact itens.
The 2nd , as Medea said, its from the collector quest in ACT 3 , but there is a particular point, there are 2x spots where that statue drops, in cave near Zhidan ( with ratmans) and in the North ( cave with spiders) , if you already completed the quest , you can drop it , as it gives no value.
The scrool i dont remenber , what it says ?