<s>
The	B-Algorithm
Dorabella	I-Algorithm
Cipher	I-Algorithm
is	O
an	O
enciphered	O
letter	O
written	O
by	O
composer	O
Edward	O
Elgar	O
to	O
Dora	B-Algorithm
Penny	I-Algorithm
,	O
which	O
was	O
accompanied	O
by	O
another	O
dated	O
July	O
14	O
,	O
1897	O
.	O
</s>
<s>
Dora	B-Algorithm
Penny	I-Algorithm
(	O
1874	O
–	O
1964	O
)	O
was	O
the	O
daughter	O
of	O
the	O
Reverend	O
Alfred	O
Penny	O
(	O
1845	O
–	O
1935	O
)	O
of	O
Wolverhampton	O
.	O
</s>
<s>
Dora	B-Algorithm
Penny	I-Algorithm
was	O
almost	O
seventeen	O
years	O
his	O
junior	O
.	O
</s>
<s>
Edward	O
and	O
Dora	O
liked	O
one	O
another	O
and	O
remained	O
friends	O
for	O
the	O
rest	O
of	O
the	O
composer	O
's	O
life	O
:	O
Elgar	O
named	O
Variation	O
10	O
of	O
his	O
1899	O
Variations	O
on	O
an	O
Original	O
Theme	O
(	O
Enigma	O
)	O
Dorabella	B-Algorithm
as	O
a	O
dedication	O
to	O
Dora	B-Algorithm
Penny	I-Algorithm
.	O
</s>
<s>
Elgar	O
was	O
interested	O
in	O
ciphers	O
:	O
the	O
Elgar	O
Birthplace	O
Museum	O
preserves	O
four	O
articles	O
from	O
Pall	O
Mall	O
magazine	O
of	O
1896	O
entitled	O
Secrets	O
in	O
Cipher	O
and	O
a	O
wooden	O
box	O
that	O
Elgar	O
painted	O
with	O
his	O
solution	O
to	O
a	O
cipher	O
that	O
the	O
fourth	O
of	O
these	O
articles	O
had	O
presented	O
as	O
an	O
insoluble	O
"	O
nihilist	B-Algorithm
cipher	I-Algorithm
"	O
.	O
</s>
<s>
The	O
Elgar	O
Society	O
advertised	O
a	O
Dorabella	B-Algorithm
Cipher	I-Algorithm
Competition	O
in	O
2007	O
to	O
mark	O
the	O
150th	O
anniversary	O
of	O
Elgar	O
's	O
birth	O
.	O
</s>
