Chapters
0:00 Introduction
0:53 Research Methodology
2:52 1971 Games
9:41 1972 Spring Training
12:40 May 1972
13:44 June 1972
23:29 July 1972
29:10 August 1972
32:00 September 1972
35:31 October 1972
35:59 Unknown Date
38:29 Conclusion

References:

Google Spreadsheet of All 1973 Player Cards Cross-Referenced:
https://docs.google.com/spreadsheets/...

March 4, 1972: Mets @ White Sox:
https://news.google.com/newspapers?ni...

Roberto Clemente card:
https://baseballhall.org/discover/car...

https://news.google.com/newspapers?ni...

March 12, 1972, White Sox @ Royals:
https://www.number5typecollection.com...

http://1973toppsphotography.blogspot....

https://news.google.com/newspapers?ni...

May 13, 1972, Tommie Agee card:
https://tht.fangraphs.com/card-corner...

June 17, 1972, Ellie Rodriguez card:
   • Ellie Rodriguez-1973 Topps Card # 45  

June 25, 1972, Joe Rudi card:
http://1973toppsphotography.blogspot....

August 23, 1972, Bobby Bonds card:
https://tht.fangraphs.com/card-corner...

September 4, 1972, Mike Epstein card:
https://tht.fangraphs.com/card-corner...