There are 3 Samuel McDowell trading cards tracked on HobbyCardIndex, spanning Baseball. The most valuable is the Samuel McDowell [So 1966] #37 at $12.50 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/samuel-mcdowell

Samuel McDowell Cards

Name: Samuel McDowell Card Price Index — Historical Data
Creator: HobbyCardIndex
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3 cards · Baseball

All Samuel McDowell Cards

Samuel McDowell Cards

All Samuel McDowell Cards

Samuel McDowell [So 1966] #37

Samuel McDowell #37

Samuel McDowell [So 1967] #37

Track Samuel McDowell Cards