Stuart Dodgson Collingwood 
Life and Letters of Lewis Carroll (Rev. C. L. Dodgson) [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. T is with no undue confidence that I have accepted the invitation of the brothers and sisters of Lewis Carroll to write this Memoir.