With Ernst Heinrich Landrock, he based a photographic company in, successively, Tunis, Munich, Leipzig and Cairo, publishing the works as by "Lehnert & Landrock".
Franz Liszt | Franz Schubert | Franz Kafka | Rudolf Nureyev | Franz Joseph I of Austria | Franz Ferdinand | Rudolf Steiner | Franz Boas | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Franz Lehár | Rudolf Virchow | Rudolf Hess | Franz Josef Land | Franz Werfel | Franz von Papen | Franz Kline | Franz Beckenbauer | Rudolf II, Holy Roman Emperor | Rudolf Kempe | Franz Marc | Rudolf Hilferding | Rudolf | Franz Kneisel | Franz Joseph | Franz Welser-Möst | Franz Rosenzweig | Franz Kugler | Rudolf Schwarz | Rudolf Haag |