Indeed Wrestling blog: Chris Harrington’s pro wrestling analytics blog with posts from 2005 to 2018.
Mookie’s pro-wrestling stats website – The original site went down in 2023 and has been restored and archived here at wrestlenomics.com: business stats, match results, contracts, awards records, star ratings, etc.

WRESTLENOMICS GOOGLE DRIVE

KEY METRICS

Showbuzzdaily Viewership for WWE Raw & Smackdown Sep 2014 – present: viewership and demographics data collected from Showbuzzdaily.com, updated periodically, compiled by Brandon Thurston
Gerweck.net’s TV ratings records: TV ratings records for WWE, WCW, TNA, 1998-2016

Reported Gates in the Wrestling Observer Newsletter (1970 – 2004): Ticket revenue data reported in the WON, complied by Cory Gibson.
Event Info spreadsheet: Records from prowrestlinghistory.com of top PPV buys, TV ratings, stadium attendance, Nippon Budokan attendance, Sumo Hall attendance.
WWE Touring Schedule 2018-2019 with color-coded show types: tentative upcoming WWE live event schedule via court filings, with show types extrapolated and color-coded.
WWE main roster US & Canada attendance, 2004 – present: compiled by Wrestlenomics (via WWE corporate website)
Wrestlemania paid attendance based on round numbers in KPIs, 2008-present: compiled by Wrestlenomics
WWE NXT attendance, 2015 – present: compiled by Wrestlenomics (via SEC filings)
NJPW attendance, May 2015 – present: compiled by @EvanDeadlySinsW (via NJPW official website)
NJPW ticket prices: compiled by @EvanDeadlySinsW, for Osaka, Sumo Hall, Tokyo Dome
ROH & other attendance, 2002-1H2019: compiled by Lavie Margolin (via Wrestling Observer Newsletter, profightdb.com and Wrestlingdata.com)
Dragon Gate attendance, 2018: partially estimated, compiled by Brandon Thurston (via Dragon Gate official website)

Google web search, 2004 – Q42019: For WWE, NJPW, ROH, Impact in regions worldwide, U.S., U.K., India, Japan and Canada