Portrait o f Aleksander Rajchman

Aleksander Rajchman was a notable figure in Warsaw's scientific and intellectual circles, and Lentz's portrait of him — date unrecorded — belongs to the painter's extensive gallery of distinguished Warsaw professionals. Rajchman came from a prominent Jewish-Polish intellectual family; his brother Ludwik Rajchman became an internationally prominent public health official. Aleksander himself was engaged in Warsaw's cultural and educational life during the difficult years of Russian partition, when maintaining Polish intellectual institutions required constant negotiation with imperial authorities. Lentz's decision to paint him places Rajchman in the company of scholars, lawyers, writers, and civic leaders whose portraits the artist produced across three decades. These commissions were simultaneously acts of cultural solidarity — honouring figures who sustained Polish intellectual life — and demonstrations of Lentz's standing as the most prestigious portraitist in the city. The National Museum in Warsaw holds the canvas as part of its comprehensive collection of Polish art from the partition era.

Lentz's method for portrait heads involved careful observation of local colour shifts across the face — the slightly different warmth of cheek versus temple, the cooler shadow beneath the chin — unified by an overall tonal key that gave his work coherence without clinical flatness.