Yesterday, I spoke about the neccessity to have the ability to create your own pdf’s if you are in the business of information products. The simple pdf printer drivers you can obtain to do this job are fine but they do not allow to edit an existing pdf. Why do you need to be able [...]

A PDF (Portable Document Format) is a format for documents developed by Adobe. It has become the universally accepted format for e-books as they can easily be made and – most importantly they can be read on any computer which has Adobe Reader installed. Most new machines ship with this pre installed but if not [...]

In a previous post I showed you some vintage photographs of New York City which can be found on Wikimedia Commons. Today, I want to show you some more great NYC images you can find in old guide books to the city. As these have been extracted from pdf files they are, of course, not [...]