Crew list of Ships hit by U-boats
John Leon Dyczkowski
Merchant Marine. American
| Born | 30 May 1914 | Philadelphia, PA | |
| Died | 23 Feb 1942 | (27) |
Roster information listed for John Leon Dyczkowski
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | W.D. Anderson | Steam tanker | Oiler | 23 Feb 1942 (+) | U-504 |