Camassia leichtlinii (USA) ?

Camassia leichtlinii (Baker) S.Watson, Proc. Amer. Acad. Arts 20: 376 1885. (Syn: Camassia esculenta var. leichtlinii Baker; Quamasia leichtlinii (Baker) Coville);
  

Images by Alka Khare (Id assistance by Viplav Gangar) (Inserted by J.M.Garg) (For more images & complete details, click on the links) 

https://08511630493324166816.googlegroups.com/attach/33986c0c667ac561/IMG_0429.JPG?part=0.1&view=1&vt=ANaJVrFAarhWz-FI36IR1Gr2RIkbBPB_DiaNRYsjn14I9ifR_AH3CFbWR42_8ogbNPGNKr7DhNbf3_NkgGqztOO-3IVDZuaLTA63DMIzMhNW5HiJHFeT4mQ
 
  
S. British Columbia to C. California (as per WCSP)

Requesting to please ID these flowers captured in Chicago, USA in May 2013.
It is a Camassia sp. [Asparagaceae].
Thank you ... for the lead...
It seems to be Camassia leichtlinii...Kindly validate.
I'm not sure about the species.
 
  
 
 

References:

The Plant List Ver.1.1  WCSP  GRIN  Kew 
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