origin: An American cartoonist, so its mostly negtive and American perspective towards Japan
Purpose: The content is about Japanese threats. The author portray the threats as bluff by making it looking like a kite, and the funny looking japanese officials.
value: it tells me about the american perspective of thinking Japanese threats as bluffs, and didn't treat it seriously.
Limitation: However, this source didn't show any Japanese perspective which would really make people underestimate Japanese's thoughts and intentions to go to war (which do happen when they attack puerl harbor)