1.  Marriage Record:

2.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #14 of 58):  Upper Milford Twp., Lehigh Co., PA, Roll T9_1147 (Book 1), p. 335B, PN 14, SD 4, ED 193, enumerated 5 Jun 1880, official enumeration date 1 Jun 1880 (extracted by Diana Gale Matthiesen):¤•

1880:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

7

8

9

10

13

15

21

24

25

26

115

132

Traub William H

W

M

29

/

Teacher

PA

PA

PA

_____ Elizabeth

W

F

28

Wife

/

Keeping House

PA

PA

PA

_____ Alice E

W

F

9

Dau

/

/

PA

PA

PA

_____ Annie C

W

F

7

Dau

/

/

PA

PA

PA

_____ Hannah E

W

F

3

Dau

/

PA

PA

PA

_____ Lillie S

W

F

?/12

Apr

Dau

/

Died

PA

PA

PA

3.  1890 Census:  the 1890 Census Population Schedules were destroyed.

4.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #37 of 47):  614 Penn Street, Allentown City (Ward 10), Lehigh Co., PA, Roll T623_1430 (Book 1), p. 32A, SN 19, SD 3, ED 75, enumerated 1 Jun 1900, official enumeration date 1 Jun 1900 (extracted by Diana Gale Matthiesen):¤•

1900:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

19

20

21

22

23

24

25

27

*

414

410

418

Traub William H

Head

W

M

Mar 1850

50

M

12

PA

PA

PA

School teacher

2

Y

Y

Y

R

H

_____ Esther R

Wife

W

F

May 1863

37

M

12

4

3

PA

PA

PA

Keeping House

Y

Y

Y

_____ Herbert D

Son

W

M

Mar 1890

10

S

PA

PA

PA

At school

10

Y

Y

Y

_____ Victor A

Son

W

M

Oct 1893

7

S

PA

PA

PA

At school

10

_____ Paul A

Son

W

M

Dec 1897

2

S

PA

PA

PA

_____ Hannah E

Dau

W

F

May 1877

23

S

PA

PA

PA

School teacher

3

Y

Y

Y

*Penn Street

5.  1910 Census Index/Images (online at Genealogy.com, Image #195 of 544):  Philadelphia City (Ward 27), Philadelphia Co., PA, Roll 1401 (Book 2), p. 97B, SN 10B, SD 7, ED 414, enumerated 11 Apr 1910, official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):¤•

1910:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	5	6	7	8	10	11	12	13	14	17	18	19	20	21	22	23	24
157	155	Traub Esther D	F	W	46	W	4	3	PA	PA	PA	Eng	Servant	Hotel	W	N	0	Y	Y

One of many staff and residents in a hotel.  I had trouble reading the page at Genealogy.com and couldn't find the page at Ancestry.com, so my extraction is definitely not complete nor necessarily accurate.  If Esther still has three children living, where's Paul?  He would be only 12 years old in 1910.

6.  1920 Census Every-Name-Index/Images (online at Ancestry.com):  not found.

7.  1930 Census Every-Name-Index/Images (online at Ancestry.com):  not found.

8.  SSDI:  Social Security Death Index (online at RootsWeb.com; missing columns contained no data):

Name	Birth	Death	Last Residence	SSN	Issued	Post-em
Victor TRAUB	10 Oct 1892	Nov 1964	(North Carolina)	066-01-3853	NY	Yes

9.  Anon.  Saturday, 12 Sep 1903.  "Will Be Matron at Perkiomen Seminary."  Town and Country Newspaper, Pennsburg, Montgomery Co., PA (kindly posted to the TRAUB Surname Board at RootsWeb.com/Ancestry.com by Sharon Stamis):

Mrs. Esther TRAUB, relict of the late William H. TRAUB, of Allentown,  formerly of Pennsburg, will assume the duties as matron at the Perkiomen Seminary.  She was tendered a farewell surprise party on Monday evening by about thirty members of Zion's Reformed church and Sunday school, of Allentown, of which she was a member.

9.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).

10.  Messages posted to the TRAUB Surname Board (online at RootsWeb.com/Ancestry.com).