
Clue 1
Have you identified all six individuals pictured?
Clue 2
Searching their last names should make it easy.
Solution
The first letter of each first names spells out DALLAS.
Clue 3
They are, in order: Daniel Solander, Alfred Nobel, Lise Meitner, Liev Kreyberg, Anders Celcius, Svante Arrhenius.

Clue 1
Does anything look familiar about these numbers?
Clue 2
To be fair, this puzzle is a much higher degree of difficulty than some others...
Solution
All the numbers are degrees in Farenheight. When converted into Celcius, they yield single digit numbers from 1-26, forming a simple alphabet. The resulting plaintext reads: "Their chief of European operations is known as Leviathan."
Clue 3
Anders, from the front of the card, may be able to help.
Clue 4
You may need to adjust your temperature.

Clue 1
Does anything look familiar about these numbers?
Clue 2
To be fair, this puzzle is a much higher degree of difficulty than some others...
Solution
All the numbers are degrees in Farenheight. When converted into Celcius, they yield single digit numbers from 1-26, forming a simple alphabet. The resulting plaintext reads: "Their chief of European operations is known as Leviathan."
Clue 3
Anders, from the front of the card, may be able to help.
Clue 4
You may need to adjust your temperature.

Clue 1
Have you identified all six individuals pictured?
Clue 2
Searching their last names should make it easy.
Solution
The first letter of each first names spells out DALLAS.
Clue 3
They are, in order: Daniel Solander, Alfred Nobel, Lise Meitner, Liev Kreyberg, Anders Celcius, Svante Arrhenius.