No map that I'm aware of, but the Wiki link below gives the locations of all five of the Keller holotapes.
http://fallout.wikia.com/wiki/Keller_Family_Refuge
I made a new file yesterday and about an hour after exitign the vault i found tape number 5 on my way to rivet city
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now all i have to do is rememebr where long the path to rivet city it was ... eitehr before or after the dunken house behind soem trucks with a tire wall which with soem difficulty could be jumped over