I couldn't find any specific information about a poem by Joyce Embrey featuring Eddie Sweat and Secretariat. It's possible that the poem you are referring to is not widely known or published. You may want to try contacting Joyce Embrey directly or exploring niche poetry websites or forums for more information.
Joyce Rezendes has written: 'Joyce Rezendes'
Joyce Tenneson has written: 'Transformations'
Ruth Mygatt Joyce has written: 'Certain proposals of Ruth Joyce'
Simon Joyce has written: 'Capital offenses'
Joyce Hibbert has written: 'The War Brides'
Joyce Herbert has written: 'Approaching snow'
Joyce A. Coffin has written: 'Lighthouse keeping'
Joyce Lloyd has written: 'Dyes from plants'
Joyce Ward has written: 'Children out of school'
HELEN JOYCE has written: 'VIEWS ON GRAMMAR'
Joyce Neimanas has written: 'Total chaos'
Catherine Joyce has written: 'And know the place'