It's all-change as the original line-up is completely overhauled, although the replacements were even less memorable than the strips they replaced.
ISSUE 25
16 August 1975
ISSUE 26
30 August 1975
ISSUE 27
6 September 1975
Doc Savage, published to coincide with the UK release of the feature film, ends this issue.
ISSUE 28
13 September 1975
ISSUE 29
20 September 1975
ISSUE 30
27 September 1975
Last Silver Surfer.
ISSUE 33
18 October 1975
The Cat and Giant Man begin this issue.
ISSUE 34
25 October 1975
ISSUE 35
1 November 1975
ISSUE 36
8 November 1975
ISSUE 37
15 November 1975
ISSUE 38
22 November 1975
ISSUE 40
6 December 1975
The Cat ends this issue.
ISSUE 41
13 December 1975
The Scarecrow starts this issue.
ISSUE 42
20 December 1975
ISSUE 43
27 December 1975
ISSUE 44
3 January 1976
Last X-Men and Scarecrow.
ISSUE 45
10 January 1976
New strip line-up: Marvel Two-in-One (The Thing) and Bloodstone.
ISSUE 46
17 January 1976
ISSUE 47
24 January 1976
ISSUE 48
31 January 1976
ISSUE 49
7 February 1976
ISSUE 50
14 January 1976
Final issue.
Somewhat cryptic merger announcement.
Double-page in-house advertisement for SUPER SPIDER-MAN WITH THE SUPER-HEROES.
SUPER SPIDER-MAN WITH THE SUPER-HEROES - FIRST MERGE ISSUE.
ISSUE 158
21 February 1976
Re: "ISSUE 33
ReplyDelete18 October 1975
The Cat and Giant Man begin this issue."
Actually, The Cat appeared in #s 31 and 32 previous to this issue.
Hope this helps!