Alco: https://en.wikipedia.org/wi…/List_of_ALCO_diesel_locomotives 

Baldwin: https://en.wikipedia.org/…/List_of_Baldwin_diesel_locomotiv… 

GE: https://en.wikipedia.org/wiki/List_of_GE_locomotives 

GM-EMD: https://en.wikipedia.org/wiki/List_of_GM-EMD_locomotives 

MLW: https://en.wikipedia.org/wiki/List_of_MLW_diesel_locomotives (Montreal Lokomotive Works) 

 
WL: https://en.wikipedia.org/w…/List_of_Westinghouse_locomotives