Stephen,

There are two simple ways you can do this.
Hold down the option key when launching iPhoto and select the library you wish 
to use
Perhaps the most effective would be for you to use iPhoto Libaray Manager.  You 
can have a look at it here.  http://www.fatcatsoftware.com/iplm/

regards,

robin


There are other ways to switch between libraries by holding down the 
On 15 Dec 2013, at 6:00 pm, Stephen Chape <[email protected]> wrote:

> Hi folks,
> 
> My step son (who lives in Dubai) has left me a hard drive containing his 
> photos back up.
> However rather than just a folder full of JPG files, it contains his iPhoto 
> Library.
> The idea is that I should copy any of the photos I wish of the grand children.
> 
> Is it possible to direct my iPhoto App to use his library long enough to copy 
> what I require and then go back to my library ?
> If so what are the steps required please ?
> 
> 
> Regards,
> Stephen Chape
> 
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