layout across multiple scores

[Jon Wild]

How can I specify a layout block that applies to all scores in a book? I 
wrote a program to generate musical examples, and each snippet is to go on 
its own staff. So my program writes them in separate scores like this, 
each with its own layout block:

==begin .ly file==

\book {
  \score {
    { <c' ees' fes' g' aes'>1 <cis' d' eis' fis' a'>1 }
    \layout {
      ragged-right = ##t
      \context {
        \Staff
        \remove "Time_signature_engraver"
        \remove "Bar_engraver"
      }
    }
  }
  \score {
    { <c' des' e' f' aes'>1 <d' ees' fis' g' bes'>1 <a' c'' des'' e''
f''>1 <b' d'' ees'' fis'' g''>1 }
    \layout {
      ragged-right = ##t
      \context {
        \Staff
        \remove "Time_signature_engraver"
        \remove "Bar_engraver"
      }
    }
  }
}

==end .ly file==

But when there are dozens of snippets in the file, the file is much bigger 
than it needs to be because of the duplication of layout instructions. Can 
I include a layout block once to cover all scores in the book? If so, 
where does it go? I tried this structure:

\book {
  \layout {
  }
  \score {
  }
  \score {
  }
}

but that didn't work. Thanks for any tips.  --Jon