In the category "Space" we currently track items of 443 persons. The most popular ones, by number of traded items, are:

Harrison SchmittRichard TrulyVance Brand
Bill DanaGuion BlufordJames McDivitt
Pete ConradRobert CrippenTom Stafford
Mike MelvillGordon FullertonEd Gibson
Ed CharlesJerry CarrDave Scott
Jerry LinengerJim McDivittScott Crossfield
J.T. ThomasJohn Blaha 

You can find all people that we're currently tracking items for in the alphabetical index:
A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    R    S    T    V    W    Y    Z