Conversation so far:
Was I Heard It Through The Grapevine a recording by producer Norman Whitfield?
Producer Norman Whitfield recorded I Heard It Through the Grapevine with various Motown artists.
What other recordings did they make, besides I Heard It Through The Grapevine?
Besides I Heard It Through The Grapevine, the first known recording is with the Miracles on August 6, 1966, though there may also have been a recording with the Isley Brothers
Did a recording of I Heard It Through The Grapevine go missing?
Whitfield intended to record I Heard It Through the Grapevine; however, a track has not turned up – some Motown historians believe that a session may have been scheduled but cancelled
Were there other recordings of I Heard It Through the Grapevine?
Whitfield recorded the song I Heard It Through The Grapevine with Marvin Gaye over five sessions, the first on February 3, 1967, and the last on April 10, 1967.
What was the next recording of I Heard It Through the Grapevine after Marvin Gaye?
In 1968, Bobby Taylor & the Vancouvers recorded a version of I Heard It Through the Grapevine for their debut album based on Gladys' recent hit
Was Bobby Taylor & the Vancouvers' the most popular recording of I Heard It Through The Grapevine?
The Marvin Gaye recording of I Heard It Through The Grapevine is the most popular recording of the song

Question: What other people made recordings of this song?
Self-contained rewrite: What other people made recordings of I Heard It Through The Grapevine besides Bobby Taylor & the Vancouvers, Marvin Gaye, and the Miracles?