• Dywien, Jack

Marx House Bulletin (1979), 91, (1), 3–5.

• Rothstein, Andrew

Marx House Bulletin (1979), 91, (1), 6

• Walker, Frank

Marx House Bulletin (1979), 91, (1), 7–8.

• Shanley, J. R.

Marx House Bulletin (1979), 91, (1), 9–11.

• Rothstein, Andrew
• Shanley, J. R.

Marx House Bulletin (1979), 91, (1), 14–15.

• Fairley, John

Marx House Bulletin (1979), 91, (1), 12–14.