1. Devising the Topic
Coming up with a clear thesis topic is one of the most challenging parts of the thesis exercise, and often comes from careful consideration of both a potential question (or set of questions), and a body of sources.
You might already have a clear idea of what kinds of question you would like to answer - perhaps generated by your reading of the historiography around a particular topic - or you might have a body of sources you would like to probe for the information they can bring to light about a topic or idea.
In both cases, it is useful to start a dialogue between these two elements. Can your sources answer the questions you are asking of them? Do your questions lend themselves to a particular kind of question? You will likely find that, in the course of considering this, your sources and/or your questions change. It is therefore good to start thinking about your thesis topic early, so that you have enough time to think through possible ideas and are not stuck if you find that your initial ideas don't work out.
2. Refining the Topic
The topic you study will almost certainly end up being much narrower than your initial idea. Many students begin by proposing what is in effect a tutorial essay: but the broad questions asked in a tutorial essay are much too large to provide a viable research project. A thesis topic should be tightly focused on a discrete body of sources, and while it might touch on larger issues - such as the causes of the Reformation - it should aim to do so through smaller and more precisely defined sub-questions.
Students are often concerned that their thesis is not sufficiently 'original'. Originality in historical writing is not a matter of coming up with a great theory which will change the world, but simply making progress on a historical question or possibly in finding new material. You may start with a well-worn question which can be reassessed, perhaps by looking at new sources, or by looking at sources already deployed in new ways. You might think that historians have not asked a particular question in a particular field: perhaps comparison with other historiographies or theories will have alerted you to the possibility of probing this issue. You may then examine well-thumbed sources to examine these new questions. So not everything about your research needs to be new: but the combination of your questions and the sources you use will generate a new piece of work which can be said to be original.
3. Refining the Sources
The sources you choose should also be manageable in terms of the time you have to read them. You will need to make sure that you have enough sources to answer the question you pose, and that the sources you have resonate with each other. On the other hand, choose too large an archive of sources and you will find yourself unable to analyse them properly - or, indeed, read them all in time.
You should also give some consideration to the kinds of sources that you would like to read. If you choose a topic that is not rooted in modern British history, do you have the language and palaeographic skills to access the documents you need? Are there sources available in translation or publication that you might be able to consult to help you? If you are conducting a more modern historical study, would it be valuable to conduct an oral history project - and if so, will you be able to conduct your interviews professionally and in good time?
It can be impressive to investigate unpublished sources, especially if they are in difficult languages and inaccessible forms such as virtually illegible handwriting. It is not necessary, however, to use unpublished material. Your examiners are aware that not all students will be able to travel to far-off archives or read non-English sources, but, more importantly, it is primarily the use that is made of evidence in the light of the questions asked of it that will determine the quality of the thesis. There are many kinds of published materials available, including non-verbal sources, and translations of sources also help to open up access to cultures which might otherwise be inaccessible.
The librarians and curators of Oxford’s many specialist collections welcome well-organized undergraduate historians who seek to use their materials. Experience suggests that many thesis writers have found intellectual riches in libraries or collections they scarcely knew existed prior to the annual Thesis Fair. Students seeking to consult rare books and manuscripts in the Bodleian system may be required to download a permission form and obtain their tutor or advisor’s signature.