Telegram

Form 51.

Two sided form. Partial rectangle is xx by yy mm. Form 51 in top center under rectangle. Printing information at lower right.

1891

Unnumbered form in triangular shape. Printing on two sides. Printing information in lower right.

Numbered Form 51 in rectangular format.  Printing on one side.

1908

1915

1928

Form 851.

Form 851 and inside parentheses that this was formerly form 51.