Spread Certificate · No. HIS-01394
This certifies how far it spread
The 4-Hour Workweek
Tim Ferriss; Crown / Harmony (publisher) ·April 2007 ·seeded onRetailthenOpen webPressAudio
Spread Score
54
Notable
Verified independently
Verified
3 outlets
National press, from WIRED and ABC News
Verified
Aug 2007
Milestone date, Apr 24 ’07 to Aug 2007
Verified
4 platforms
Started on Retail
Claimed, not audited
Claimed
1M sold
US hardcovers sold, author-reported lower bound in 2011
Per Tim Ferriss
Claimed
#1
NYT hardcover business, August 2007
Per Tim Ferriss
Claimed
#1
WSJ business, best in listed May–August run
Per Tim Ferriss