Writers and their Typewriters - Xavier University The link between writer and typewriter is often an intimate one that lasts for decades. Here are some favorite brands of typewriter used by authors, past and present. Olivetti Valentine, Olivetti Praxis 48, correcting Selectric, Olivetti standard manual (blog Michael Moore - SW School of Botanical Medicine Home Page Herbal Manual by Harold Ward (1936)115 page bookmarked file 288K. A lovely pocket manual I've used for years. As with many others from the era, the primary influence, besides English and continental herb traditions, was the later Thomsonians. The manual has a good Anglo-centric history of herb usage and 153 concise herb monographs. Twitpic Dear Twitpic Community - thank you for all the wonderful photos you have taken over the years. We have now placed Twitpic in an archived state. Agriculture Extension and Communication ver1.2 - SlideShare Jun 22, 2015• Dynamically continuous – the innovation can be either a creation of a new product or a radical change to a existing one (e.g. compact dics). • Discontinuous innovation – produces a totally new product in the market. Because of the big change, its changes the consumers’ buying and using patterns (e.g. typewriter replaced by computers