- EbookThe Peaks of the Balkans TrailRudolf Abraham
- EbookThe Mountains of MontenegroRudolf Abraham
- EbookWalks and Treks in CroatiaRudolf Abraham
- EbookWalking in the SalzkammergutRudolf Abraham
- EbookWalking St Cuthbert's WayRudolf Abraham
- EbookHiking Slovenia's Juliana TrailRudolf Abraham
- EbookTrekking in Torres del PaineRudolf Abraham
- EbookWalking St Oswald's Way and Northumberland Coast PathRudolf Abraham