Mr. Speyer said he met Mr. Mack , 29 , through his father , John J. Mack , the chief executive of Morgan Stanley , but first saw his work last summer while traveling through Mexico , where the photographer lives .
John J. Mack /business/person/company Morgan Stanley
NNP NNP VBD PRP VBD NNP NNP , CD , IN PRP$ NN , NNP NNP NNP , DT JJ NN IN NNP NNP , CC RB VBD PRP$ NN JJ NN IN VBG IN NNP , WRB DT NNP NNS .
John J. Mack
PERSON
Morgan Stanley
ORGANIZATION
/business/person/company