The Souvenir Post Card Co (1905-1914) of 268 Canal Street, New York, was a major publisher of a variety of post card types, including many view cards. They used three different printers over the course of their business. 

The company was purchased by Valentine and Sons, and they produced cards in America under the name Valentine-Souvenir Co. At about the same time as the merger Valentine started publishing Souvenir series cards in the UK.

The comic cards of interest here are those with a bee logo, which seems to date from about 1907.

Times Building, New York

It's a wonder to me

N14-G?

23 June 1908

ß

St Pauls Church, New York

I'm Resting Here

N14-K

à

Post Office, New York

I shall try to post you

N14-A

12 May 1908

ß

Park Row Building, New York

My Business is looking up

N14-?

à

Post Office, Philadelphia - N21-A á

I shall try and post you

City Hall, Philadelphia

It's a wonder to me

N21-C

26 Sept 1908

ß

???, Pittsburg

My but Pittsburg is growing some

[Back not seen]

à

Good-bye Little Girls Good-bye

The card on the left has a Bee Logo and the words "Copyright 1905 Souvenir Post Card Co, N.Y." and  is also known posted 1905 with different undivided back.

The British version on the right has "Copyright S.P.C. Co 1905 Printed in USA" and was posted in England 20 November 1909.

Good-bye Little Girls Good-bye

Seen posted July 1906

The husband and how to train them

Valentine series - Souvenir

At least some of the comic cards by Charles Crosbie for Valentine (in the UK) also appeared in the USA, either in the "Valentine series" for Souvenir, or with the Bee Logo back.

[Golf series] Rule XVII

Bee Logo back - USA

March 1908

Posted 3 May 1909 in USA

The "Do it Now" set was published at the same time as the "F S" cards but it turns out that the artist was Geo. Davey.  See False Trails,

Posted 1908