K.  Williamson, ?Ectoparasites.?, Report of the Fair Isle Bird Observatory (1950): 40-41., 1951.

K.  Williamson, ?Numbers of black redstarts on passage in Man.?, British Birds 33(9): 252-254., 1940.

K.  Williamson, ?Fair Isle Bird observatory. First report, 1948.?, The Scottish Naturalist 61: 19-31., 1949.

K.  Williamson, ?Fleas and flatflies.?, Bulletin of the Fair Isle Bird Observatory 7: 45-48., 1952.

K.  Williamson, ?Records of fleas from Fair Isle birds.?, Bulletin of the Fair Isle Bird Observatory 1: 36., 1952.

K.  Williamson, ?Bird fleas at Fair Isle in spring 1954.?, Bulletin of the Fair Isle Bird Observatory 2: 235-236., 1954.

K.  Williamson, ?Records of bird-fleas at Fair Isle in summer and autumn, 1954.?, Bulletin of the Fair Isle Bird Observatory 2: 323-324., 1955.