There are 12 William Harridge trading cards tracked on HobbyCardIndex, spanning Baseball. The most valuable is the William Harridge [Gray Back] #1 at $27.25 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/william-harridgeWilliam Harridge Cards
12 cards · Baseball
All William Harridge Cards
William Harridge [Gray Back] #1
$27.25
William Harridge [White Back] #1
$11.50
William Harridge [Black Refractor] #1
$6.49
William Harridge #130
$5.00
William Harridge #1
$2.99
William Harridge #1
$1.69
William Harridge [Baseball's Immortals] #130
—
William Harridge #NNO
—
William Harridge #NNO
—
William Harridge #130
—
William Harridge #NNO
—
William Harridge #NNO
—