| Halley H. Prosser | |
| State House: | Michigan |
| District: | Genesee County 1st |
| Term Start: | January 1, 1905 |
| Term End: | January 1, 1909 |
| Predecessor: | Edward A. Walker |
| Successor: | Elmer G. Wheeler |
| Birth Date: | 13 March 1870 |
| Birth Place: | Lansing, Michigan |
| Death Place: | Flint, Michigan |
| Spouse: | Winifred O. Ottaway |
| Party: | Republican |
Halley H. Prosser (March 13, 1870December 22, 1921) was a Michigan politician.
Halley H. Prosser was born on March 13, 1870, in Lansing, Michigan. Halley was the youngest of three siblings. His father was a lawyer named Edwin A. Prosser and his mother was Esther A. Elsworth. Halley received a public school education in Lansing and South Lyon, Michigan. Halley later studied pharmacy in university. In 1889, Halley passed the Michigan Board of Pharmacy's examination.[1] In 1893, Halley moved to Flushing, Michigan.[2]
In Flushing, Prosser worked as a clerk in the drug business for around four years.[2] After four more years in the pharmaceutical business, Prosser gained employment in the grocery business, working for J. E. Ottaway & Company.[1] On November 8, 1904, Prosser was elected to the Michigan House of Representatives where he represented the Genesee County 1st district from January 1, 1905, to January 1, 1909.[3] In the book The Men of '05, editor Harry M. Nimmo poked fun at Prosser's weight and nosiness among other perceived character flaws.[4]
On January 6, 1897, Prosser married Winifred O. Ottaway. Winifred was the daughter of James E. Ottaway. Prosser was a Freemason and a member of the Odd Fellows.[2]
Prosser died on December 22, 1921, in his home in Flint, Michigan.[5]