Question

Robert Henderson found almost all of these things, but lost his work when his lab was destroyed by the Krakatoa eruption. One of these things was located beneath the Church on the Blood in Yekaterinburg, Russia, which was designated as a “black circle”. (15[1])Benjamin Franklin (15[2])used his position as a printer to order one of these (-5[1])things without raising suspicion, (15[1])per a question in the Madrigal Gauntlet. One of these things was discovered by removing musical scale (15[1])letters from the word “gateau”, while another was discovered by anagramming “resolution”. These ingredients to the (*) Master Serum were distributed (10[1])among (10[1])the five branches (10[1])of a family by its founder, Gideon. (10[1])A worldwide hunt for these objects involved going to the Paris catacombs, (10[1])nicknamed the “Maze of Bones”. For 10 points, name these objects sought after by Amy and Dan Cahill, of which there are 39. ■END■ (10[2])

ANSWER: 39 Clues [anti-prompt on “iron solute”; prompt on “ingredients of the Master Serum” before read with “what is the specific word for those things?”]
<Literature | 39 Clues | BC>
= Average correct buzz position