| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1938 | 1038 | 2111 | (60) | 18 |  
  | 1939 | 1029 | 2092 | (68) | 0 |  
  | 1940 | 973 | 2073 | (72) | 0 |  
  | 1941 | 994 | 2054 | (75) | 0 |  
  | 1942 | 934 | 2035 | (75) | 0 |  
  | 1943 | 902 | 2016 | (73) | 0 |  
  | 1944 | 919 | 1997 | (69) | 13 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Grossman, Howard D. |  
   | Born: |  
   | Died: |  |  |  
   | Notes: |  
   | Di Felice has 'Grossman, Harold D.' but chessgames.com has 'Howard D Grossman'. |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1936-1940, page 355 |  
   | Di Felice, Chess Results, 1941-1946, page 342 |  | Periodicals |  
   | [ChR], vol. 6, no. 9, Sep. 1938, page 215 |  | Web |  
   | [Howard D Grossman] |  |  |