I recently picked up a copy of Herbert Zim's classic introductory cryptography book 'Codes and Secret Writing' at local charity shop.
Inspired, I decided to have a go.
Here's my attempt.
I've used this code, as he claims it's the most frequently used.
15 18 18 4 7 5 2 4 5 13 4 14 18 3 8 8 .
5 15 14 1 6 7 13 3 11 21 3 11 15 1 4 12
2 9 1 16 6 1 1 22 8 17 14 20 4 11 12 4 6
12 6 1 25 15 1 5 13 17 4 12 19 3 21 1 8 7 5
18 9 17 8 7 13 8 .
14 1 3 5 7 5 16 4 12 11 7 12 1 .
2 19 4 11 4 2 8 4 12 2 9 1 8 25 15 3 6 1
6 4 4 2 4 12 2 4 2 3 11 6 15 5 5 7 5 16
2 7 14 1 7 5 14 7 5 15 2 1 8 4 12 19 9 3 2 8
2 9 1 12 6 1 25 15 1 5 13 17 22 1 5 5 1 2 9 .
14 3 6 8 3 5 10 14 17 8 2 6 1 6 1 13 4 6 10
11 3 20 1 11 .
11 1 12 2 18 4 7 5 2 4 5 13 4 14 18 3 8 8 .
10 4 15 20 11 1 26 1 6 4 .
20 3 5 10 2 9 3 2 6 1 11 1 3 8 1 10
5 7 16 9 2 8 18 4 2 6 1 14 7 24 1 8 7 5 2 19 4
2 9 4 15 8 3 5 10 3 5 10 1 11 1 21 1 5 .
12 6 1 25 15 1 5 13 17 2 9 3 2 2 9 1 8 2 3 2 7 4 5
3 2 2 9 1 18 9 4 1 5 7 24 20 6 4 3 10 13 3 8 2 8
4 5 .