Sources:

[Leo Hirschfeld]
https://news.google.com/newspapers?id=qMEaAAAAIBAJ&sjid=JUkEAAAAIBAJ&pg=3922%2C3618658
https://candyprofessor.wordpress.com/2010/02/03/tootsie-roll-mystery/
https://candyhalloffame.org/inductee/leo-hirshfield/
https://www.nytimes.com/1922/01/14/archives/kills-himself-in-hotel-illness-and-wifes-breakdown-are-blamed-for.html
https://timesmachine.nytimes.com/timesmachine/1922/01/14/109830963.pdf?pdf_redirect=true&ip=0

[Tootsie Rolls]
https://nowweknowem.wordpress.com/2013/04/18/tootsie-rolls-were-named-after-the-daughter-of-the-man-who-invented-the-popular-candy-leo-hirschfeld-now-we-know-em/
https://books.google.ca/books?id=R1bCBwAAQBAJ&pg=PA738&lpg=PA738&dq=Stern+%26+Saalberg+candy+manufacturer&source=bl&ots=TVNiRpj4A-&sig=ACfU3U3M-9uKg26i_SEH7ij7fmv6q1l4Xw&hl=en&sa=X&ved=2ahUKEwj7zYXyrrD4AhWEGTQIHYVnAx8Q6AF6BAhLEAM#v=onepage&q=Stern%20%26%20Saalberg%20candy%20manufacturer&f=false
https://patentimages.storage.googleapis.com/e1/a2/c9/65cbbfddc66f4d/US903088.pdf
https://web.archive.org/web/20100308093158/http://candyprofessor.com/2010/02/05/tough-tootsie/
https://books.google.ca/books?id=vkJXEAAAQBAJ&pg=PT47&lpg=PT47&dq=describing+the+taste+of+a+tootsie+chewy+and+chocolate-y&source=bl&ots=16WP_gcR8H&sig=ACfU3U25-wXzyJaBD9D1i7Bowefr_rxpVg&hl=en&sa=X&ved=2ahUKEwim3JDAw7L4AhWKD0QIHd_RDqQQ6AF6BAgrEAM#v=onepage&q=describing%20the%20taste%20of%20a%20tootsie%20chewy%20and%20chocolate-y&f=false
https://candyprofessor.files.wordpress.com/2010/02/1909-conf-jnl-00132.jpg
https://clickamericana.com/topics/food-drink/tootsie-rolls-americas-favorite-candy-1955
https://www.smithsonianmag.com/smart-news/tootsie-rolls-were-wwii-energy-bars-180962202/
https://www.nytimes.com/2009/03/24/nyregion/24candy.html
https://tootsie.com/interactive-timeline/
https://www.google.com/search?q=tootsie+roll+ads+1942+quick+energy&tbm=isch&ved=2ahUKEwie78b29Of4AhUPKjQIHcwtAeYQ2-cCegQIABAA&oq=tootsie+roll+ads+1942+quick+energy&gs_lcp=CgNpbWcQA1DxA1iiC2CgDWgAcAB4AIAB8AGIAfoDkgEFNC4wLjGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=2GnHYp6jFo_U0PEPzNuEsA4&bih=731&biw=1600&rlz=1C5CHFA_enCA938CA939#imgrc=VaSauagxR0EhbM
https://www.mentalfloss.com/article/68805/12-sweet-and-chewy-facts-about-tootsie-rolls
https://youtu.be/QiXeKF1uRZA
https://www.insider.com/popular-candy-by-year-2017-12
https://seekingalpha.com/article/4505851-tootsie-roll-industries-opinion-unchanged#:~:text=For%20the%20first%20quarter%20of,generated%20just%20one%20year%20earlier.&text=On%20the%20bottom%20line%2C%20the%20picture%20continued%20to%20improve%20as%20well.


[Bromangelon]
https://www.yahoo.com/lifestyle/jell-o-bromangelon-193954149.html
https://chroniclingamerica.loc.gov/lccn/sn91066782/1907-10-03/ed-1/seq-5/#date1=1789&index=3&rows=20&words=Bromangelon&searchType=basic&sequence=0&state=&date2=1963&proxtext=%22Bromangelon%22&y=0&x=0&dateFilterType=yearRange&page=1


[Inventions]
https://patents.google.com/patent/US543733A/


[Stern & Saalberg]
https://books.google.ca/books?id=fuUaAQAAIAAJ&lpg=PA1285&ots=bV_3VKeWxv&dq=jacob+saalberg+1896&pg=PA1286&redir_esc=y#v=onepage&q&f=false
https://www.newspapers.com/clip/52706550/candy-company-organized/


[Taffy]
https://tasty.co/recipe/saltwater-taffy

[Korean War]
https://usmc-mccs.org/articles/how-tootsie-rolls-accidentally-saved-marines-during-war/
https://youtu.be/gDIv-byz7cQ
https://www.eater.com/2016/3/7/11176034/tootsie-rolls-american-troops-video-korean-war
https://headstuff.org/culture/history/tootsie-rolls-korean-war/

[Great Depression]
https://www.history.com/topics/great-depression/great-depression-history


[Candy Hall of Fame]
https://candyhalloffame.org/about-us/

Other sources:

[Images]

Leo Hirschfield
By busting89
https://busting89.rssing.com/chan-11185398/article11.html

Tattling Tootsie
By Wikipedia
https://en.m.wikipedia.org/wiki/File:Tattling_Tootsie_Ad.jpg

Machien Patent
By CandyProfessor
https://candyprofessor.files.wordpress.com/2010/02/hirschfeld-patent-design.jpg

Portable Radio
By Wikipedia
https://en.wikipedia.org/wiki/SCR-536#/media/File:Portable_radio_SCR536.png

Mortar Rounds
By inetres
https://www.inetres.com/gp/military/infantry/mortar/60mm.html

Old map of Brooklyn
By brooklynmap360
https://brooklynmap360.com/brooklyn-old-map

Stern and Saalberg Logo
By PeriodPaper
https://www.periodpaper.com/products/1900-ad-stern-saalberg-bro-man-gel-on-dessert-jelly-original-advertising-080648-lhj4-149

Tootsie Pop
By CandyFunhouse
https://candyfunhouse.ca/products/tootsie-pops

Army Rations
By WIkipedia
https://en.wikipedia.org/wiki/Field_ration#/media/File:French_combat_ration_dsc06927.jpg

Candy Hall of Fame
By ConfectioneryProduction
https://www.confectioneryproduction.com/news/24743/nine-inducted-into-the-candy-hall-of-fame/

[Videos]
Korean War in Colour (Documentary)
By YORME TV / YouTube
https://youtu.be/iIobfyaiAUU

Combat footage, Korean war - newsreel (1950)
By MilitaryPublicDomain / YouTube
https://youtu.be/OF_Ts_6oSi8

Battle for Berlin WW2 Footage
By Sillu / YouTube
https://youtu.be/wGJkdeRMFd0

Modern Production
By British Pathe / YouTube
https://youtu.be/dsyQufiWhio

Steamboats in the U.S.
By RapidHistory / YouTube
https://youtu.be/YCota_ixNi8

New York 1911 (New Version) in Color [60fps, Remastered] w/added sound
By NASS / YouTube
https://youtu.be/FWtWJAmHuc8

How Hard Candy Is Made WIRED
By WIRED / YouTube
https://youtu.be/6MoBvV12C58

Jello Commercial 1979
By MrClassicAds1970s / YouTube
https://youtu.be/hlXPXS6Leog

Korean War Footage
By YORME TV / YouTube
https://youtu.be/iIobfyaiAUU

Tootsie Roll Pinata
By Tootsie Rolls / YouTube
https://youtu.be/LxQc56AfZvs

Give your tootsie a tootsie
By Tootsie Rolls / YouTube
https://youtu.be/HlGrw8v3puo

Ootsies make tootsies
By Tootsie Rolls / YoutTube
https://youtu.be/USgChJ5l4i0