11.6 × 9.4 cm irreg. (comp.) 16.2 × 20.4 cm irreg. (sheet)
inscribed in pencil u.l.: FIRST IDEA inscribed in pen and ink c.l.: 23. OCT 58. (underlined) / INTRODUCTIONS at the R.C.H. / This is (in pencil) Mr Thake, this is Dr So + So. inscribed in pencil l.c.l.: Mr Thake ... Dr So + So.