Image 1 Caption: A famous image of Edwin Hubble (1889--1953), probably from the 1920s or 1930s.

Those were the good old days when a man could smoke at his desk.

Image 2 Caption: "Studio portrait of Edwin Hubble (1889--1953). photographer: Johan Hagemeyer (1884--1962), Camera Portraits Carmel. Photograph with signature by photographer, dated 1931." (Somewhat edited.)

Images:

1. Credit/Permission: Anonymous photographer, 1st half of 20th century / Uncertain.
   Nota bene: The copyright status of Edwin Hubble images has been disputed. You will have to click on image to see Edwin Hubble (1889--1953).
   Image link: St. Andrews: Biographies: Edwin Hubble (1889--1953). Image link direct: St. Andrews: Biographies: Edwin Hubble (1889--1953): Images.
   Placeholder image link: alien_click_to_see_image.html.
   
2. Credit/Permission: Johan Hagemeyer (1884--1962), 1931 (uploaded to Wikimedia Commons by User:KOKUYO, 2016) / Public domain.
   Image link: Wikimedia Commons: File:Studio portrait photograph of Edwin Powell Hubble (cropped).JPG.