How to Begin a Letter
If the Letter is to be in answer to another, begin by getting out that other letter and reading it through, in order to refresh your memory, as to what it is you have to answer, and as to your correspondent’s present address (otherwise you will be sending your letter to his regular address in London, though he has been careful in writing to give you his Torquay address in full).
How to Go On With a Letter
Here is a golden Rule to begin with. Write legibly. The average temper of the human race would be perceptibly sweetened, if everybody obeyed this Rule! A great deal of the bad writing in the world comes simply from writing too quickly.
How To End a Letter
If doubtful whether to end with “yours faithfully”, or “yours truly”, or “your most truly”, &c. (there are at least a dozen varieties, before you reach “yours affectionately”), refer to your correspondent’s last letter, and make your winding-up at least as friendly as his: in fact, even if a shade more friendly, it will do no harm!
On Registering Correspondence
Let me recommend you to keep a record of Letters Received and Sent. I have kept one for many years, and have found it of the greatest possible service, in many ways.
Found HERE
Some letters from Lewis Carroll: